
For years, John Moore and Tanner Mansell ran shark diving tours off the coast of Florida. One day, they came across a fishing line in the middle of the ocean – with over a dozen sharks caught on it. “This looked like something very illegal going on. And we felt like if we didn’t act, these sharks would definitely die.”
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You can tell a lot about a person by their accent. I really do say I park my
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cat and havid yard. Everyone around here says, like a coffee and dwog.
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We're so attached to the way that we sound because it tells a part of the story of who we are.
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If a shark is coming towards you, you know, just most of the time, just staying calm and just maintaining eye contact is going to do the trick. It's when people start freaking out and flailing around is when they're like, oh, is that a prey? Why is this. Why is the energy so high? Why is this thing looking like prey? Right. I mean, I have a hard time getting sharks close to me most of the time because I'm, like, wanting them to get close.
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This is Tanner Mansell. He's been diving with sharks for about 10 years. The first time was in 2016 on vacation in Jupiter, Florida.
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We got out there, we jumped in the water, and it was just like these sharks were just swimming within five feet of us, just minding their own business, you know, looking at us swimming around. But it was this overwhelming feeling of just calmness and peacefulness. You know, it was. It was a high, a literal high that lasted months afterwards.
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Tanner had been working a corporate job in Oregon, but after this vacation, he decided he wanted to make a change.
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I couldn't go back to what I was doing, knowing that that existed. So I just started reading books. I started putting everything I could together to be like, okay, how do I exit, you know, this lifestyle that I'm in and start over completely doing this?
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By 2017, Tanner had saved up enough money to move to Florida. Eventually, he started helping out on tours with the same company he'd gone diving with, working with a man named John Moore. John and Tanner would take small groups about four miles offshore in the Gulf Stream. Then they put a cage with fish into the water to attract sharks. Jupiter, Florida, is known for its sharks. Depending on the season they have bull sharks, hammerheads, and sometimes even great whites. By August 2020, Tanner had been working as a shark diving guide for about three years. On Monday, August 10th, they had a tour scheduled with six passengers, a couple and a family of four. Here's John.
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And we headed out to our normal bull shark spot. And I kind of remember the water was a little bit murky, but we had great sharks that day. It kind of rained, so the, the was kind of a bit overcast and the, the sharks were. And the water just wasn't super clear. But I do remember we had really good shark activity. And we did a, probably about a 45 minute dive and then we were headed back and we still had extra time, you know, before our. It was right before our lunch break.
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There was a nearby shipwreck that John and Tanner sometimes took tours to if they had extra time.
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And so we cruised over to that wreck, but the water was really murky there. Like, I'd say, you know, almost no visibility. Like, maybe not the kind of water you'd really want to be in just because, you know, it's. It just becomes a little sketchier when the water's not clear. And so we were getting ready to go back in and, and as we spun around, I could see this orange float, like, or an orange speck in a little bit further out. And so I was like, oh, God. You know, because sometimes if there's like a diver comes to the surface away from a boat, he'll inflate a little colored things so that his boat can find him and other boats don't run him over.
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You know, there's been dozens of times where we've picked people up out in the water. And so when I saw this buoy, I was thinking to myself, oh, it's probably a scuba diver or trash. So we did our normal routine. If it's trash, we'll pick it up. If it's a diver, we'll help them out, get them back to their boat. And as we got closer, we realized, okay, it's just some, you know, random buoy.
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And Tanner grabbed it, but he's like, oh, there's a fishing line on it. And he started pulling in the line and he's like, it feels like there's something on this and you know, and it's a very thick fishing line. And he pulled and pulled and pulled. And then we got to a shark that was swimming on the, on the line.
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Neither of them had seen anything like this before.
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I was out there at least five days a week and we'd never seen anything like that because, you know, occasionally, you know, it's Florida and people catch sharks occasionally, but, you know, there's strict regulations for shark fishing. And so we cut that shark free. But that line was attached, you know, to a thick, a very thick line. And so we just started pulling on that thicker line. And it was one of those where it never ends. Like, we pulled it in, we started pulling it and we got to another shark, which we cut off and then the line continued. So we realized we found something really odd out here.
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When he looked at the setup a little more, John realized that it looked like a fishing method, but called longlining. But he'd never seen a long line in this area and he'd never seen one with sharks on it.
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Long lining is. It's a method of fishing where you will have miles of fishing line set out that'll have hooks spaced out upon it. And, you know, when I was in college, I did a couple tours working on a long line boat for fishing for swordfish. And so I knew what longline is. But this wasn't, you know, where. When I was fishing, we had. It was a very legitimate looking setup. It wasn't like this was not like your regular long line setup. This had like little pink and purple weights from Walmart attached to it and to hold the line down and had this little, you know, faded buoy on the end of it. It was not like a legitimate looking setup. When I, you know, when I long lined, I was a buoy man. So I, I set the, the buoys out for the thing and we would have, you know, a massive buoy with, on the end of the line with a, with our boat name, permit number and everything on it. And then it had a, a large mast with a radar reflective dome thing on the top so that other boats would recognize it and stay away from it. And this didn't have any of that. This looked like something very illegal and subversive going on. And we felt like, you know, if we didn't act, yeah, these sharks would definitely die.
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Tanner says there were all different kinds of sharks on the line. Tiger sharks, nurse sharks, lemon sharks, and hammerheads. And that some of them looked like they weren't doing well. Some sharks, like hammerheads, need to keep moving to get enough oxygen.
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So they're trapped, they're not getting oxygen. So they. That's how a hammerhead shark will die, is you stop them from moving in the water.
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Tanner got in touch with a co worker and she called noaa, the national oceanic and Atmospheric Administration.
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She said they seemed very concerned about what we had found.
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Then their co worker called Florida Fish
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and Wildlife and they were as baffled as we were because they'd never heard of this either. Like, this is not an area where, you know, I knew lots of fishermen there. No one had ever heard of a long line there ever. And yeah, so, you know, we got no indication from anybody that we should stop doing this because nobody knew what this was.
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So they kept pulling the line.
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At first we kept thinking this was gonna end. Like, you know, you keep thinking like, okay, here's, you know, there's another shark. Oh my God, and this must be the end of this line. But it didn't end. It just. It went on for forever. And this is like back breaking work. Like you're like hand over handing especially. Cause we're collecting this line and putting it on the boat because, you know, we didn't want to just cut these animals free and leave like this line out there to, you know, pollute the ocean or potentially ensnare some other wildl. And so, you know, we're picking up this line and coiling it into the back of the boat.
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The passengers that were on board with John and Tanner helped pull the line in and they took videos of them cutting the sharks free. Go free, baby.
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That made my dad.
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Yeah.
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And everyone, you know, and everyone was kind of excited too because they see, you know, it seemed like we had found like something very criminal going on and we were, you know, saving this wildlife. And the first few sharks, you know, they looked exhausted because they've been, you know, pulling against this line for a while. But, you know, when we cut them free, they just, they just swam away. But then we got to like a bigger hammerhead shark. And that shark was not in good shape. It sort of half swam, half sank. And I'm pretty certain it died. And it was a big. Probably like a 12, I'd say at least like a 12 foot great hammerhead.
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They cut 19 sharks free at one point. A few hours in, John called Fish and Wildlife and spoke with an officer named Barry Partolo. John told him that they were still pulling the line in and cutting sharks free. Eventually they had to head back to shore. And on the way, John spotted a Fish and Wildlife boat.
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And so I buzzed over to the Fish and Wildlife boat and I said, hey, you know, we found this line, you know, out there. And he's like, I was the guy you were talking to on the phone. And so he took photos of this line, this giant pile of line in my boat and. And said, oh, my God, that's crazy. Like, I've never seen anything like that. And he said, can you, like, put it on the dock? And I said, sure. Yep. And so I headed back to our marina where I did, you know, as he said, I put it on the dock, much to the chagrin of the harbor master, who was like, wait, why are you putting this massive pile of line? But everyone was so intrigued by this line. Like, people were just coming up and checking out this massive pile of line that we've now unloaded on the dock. And we're telling everyone the story and the passengers are, you know, all excited, telling everyone what. What happened and what we found out there. And there was a. At that point, there was a guy that had, like, a fishing blog or something, and he said, oh, my God. So we told him the whole story too. And he's like, can I take pictures? And. And so we had, you know, we're posing with all this line and. And he was taking pictures. He's like, I'll put it in my fishing blog. This is so crazy. And. And that was one of the pictures that then went viral online.
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That night, John and Tanner started getting a lot of messages from people who had seen the photo online. John noticed that there were some comments that said he and Tanner were going to get in trouble because someone had a permit to set up that line.
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And I was just ignoring it because I thought there's no way that that's a permitted line because, you know, we'd already talked to all the authorities and no one had told us that there was a permanent line out there. But then I was still talking to fish and Wildlife that evening, and they said, hey, well, can we talk to you again tomorrow? And I said, yeah, absolutely. And they were. At this point, they're still. Everyone's so nice and, you know, they were acting like we had thwarted a crime. And it wasn't until the morning that, like, all of a sudden, the tone had changed.
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The day after John Moore and Tanner Mansell found the Long Line, John noticed that he had missed a call from Florida Fish and Wildlife.
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So I called them and now the guy was like very like the tone had changed so dramatically on the phone and the guy now was like super a aggro sounding on the phone. He's like, I need you to come down to, you know, the marina right now and you know, I want to talk to you. And I was like, hey, I'm going to talk to a lawyer. Because I knew something was up and I did not go down and meet him. And I said, you can talk to my lawyer.
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And then John found out that the rumors he'd been hearing online were true. The Long Line had actually been legal. Someone had a permit for it and
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it was permitted through noaa, through the National Oceanographic and Atmospheric Administration, the organization
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that John says had seemed concerned about the line being there. When his co worker called them, they learned that the permit belonged to a local fisherman's boat and that it was a type of permit that was hardly ever granted. Here's Tanner.
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So this is the most rare permitted line in the U.S. only up to 5, I think are given out per year. And initially I just felt bad because I'm like, oh, you know, we obviously interfered with a legal thing, but we did everything we could to make sure that it wasn't like we, you know, we thought we were uncovering a crime the whole time we asked law enforcement.
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John and Tanner didn't hear anything else from law enforcement over the next few months. But they say a lot of people in the community were talking about what happened.
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There's a big anti shark culture in Florida, you know, in a certain, you know, in the fishing community, you know, because they. The. A lot of the fishing community hates the sharks because, you know, the sharks eat their catch. And so a lot of the fishermen, you know, want the sharks dead. And, you know, and we regularly see, you know, gunshot wounds to sharks. Like, that's just a standard in our business. You know, we're. We're out there diving with these sharks, and you see sharks on the daily with bullet holes in their head and stuff. And so as soon as the fishing community found out that this was a legal line that was killing sharks out there and that we had detected that we had thwarted this, we became, like, public enemy number one. And they were like, I was getting death threats.
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A couple of months after they found the line, Tanner got a knock on his door. It was an official from Noah and some police officers. Tanner remembers them saying that they were now investigating what had happened with the long line as a stolen property case.
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They essentially said to me, they were like, we're not going after you. We're going after Captain John. We're not planning to put you on the indictment, but we need information and we need your cooperation. And I was like, all I said was, yeah, I'm not doing that. I'm gonna speak to a lawyer, and we can talk after that. But I don't feel comfortable. And so they're like, okay, very well, no worries. And then they left. And then I told John. I'm like, dude, John, like, they're seriously coming at us. They were coming at you. And I just didn't say anything because I didn't feel comfortable.
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The whole thing just seemed so insane. Like we, you know, if I was gonna. If we were gonna commit a crime out there, like, I wouldn't be calling the police while I was doing it. I wouldn't be calling, you know, Fish and Wildlife repeatedly on myself and the people that. The passengers. We had this chief of police, his wife, who also worked in law enforcement as witnesses to this, you know, because these. They were listening to my phone conversations on speaker. They were seeing me reporting this in real time. There was no way that you could have thought that we were doing anything, you know, illegal out there.
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John and Tanner both hired lawyers, but they hadn't been officially charged with anything. So they waited and tried to Keep working as usual.
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It was always in the back of my head, but I honestly, you know, I never thought anything would come of this. You know, we. You couldn't forget about it because still, like, almost on a daily, there were people, like, waving pistols at me when I'd go out of the harbor, you know, fishermen waving guns at me and, you know, yelling obscenities at my passengers and stuff. Like, the. The level of, you know, vitriol from the fishing community was insane.
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It was like this for a couple of years. In 2022, Tanner traveled to Indonesia, where his partner runs a nonprofit.
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So I just landed in Indonesia. I'm about two days in, and I get a call from my lawyer who says, you're being arrested and you need to be in the US Tomorrow.
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John was at home in Florida when he got the call. He remembers it was his wedding anniversary, and he was at the store buying flowers for his wife. Tanner's lawyer reached out to the prosecution to explain that Tanner was out of
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the country and said, they're willing to turn themselves in. Tanner's in Indonesia. He'll catch the first flight back, but we need a little bit of time. And that's when things started getting really serious, because the prosecutor started arguing that we couldn't do what's called, like, a safe surrender or we couldn't turn ourselves in, that they were going to arrest us on our doorstep.
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John says that after a lot of back and forth through their lawyers, they were finally able to turn themselves in. They were both charged with theft of commercial fishing gear in federal waters, a felony.
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The prosecutor offered us plea deals to plead guilty, and John and I didn't even hesitate. We were like, no, we're not pleading guilty to something we didn't do. So we were. If we would have pled guilty, we would have got misdemeanors, community service. And we had to write a letter of an apology and admit guilt and be like, we did, you know, and we were like, no. We were like, we're not going to do that, because we didn't do anything wrong here.
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John and Tanner's lawyers started preparing for the trial.
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Our lawyer sat John down before, and they. They tested him to see how he would hold up. And John is such a, like, good energy, agreeing kind of guy that he failed so miserably.
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They quickly said, john, you are not cut out for. For this. They're like, it's so easy to make you say, oh, yeah, no, I see. What. I see your point. And they're like, this doesn't Work in court.
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So our lawyers were like, look, this prosecutor's gonna eat John up if he goes up there. And I didn't even consider going up there because I'm like, well, if John's not going, I'm not going. We had four different lawyers representing us, and they said, we don't think that you guys should take the stand. We think that we have enough evidence here to acquit you. And so we decided not to testify.
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The trial began on November 28, 2022.
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The prosecution argued that we intentionally sought out to destroy this fisherman's property because sharks are worth more to us alive than dead. So we stole. Essentially, they said we stole the sharks from them.
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Because you have a tourism business that relies on your clients being able to see sharks.
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Exactly. Which, you know, obviously, I don't want to see sharks die, but I'm also, you know, no fool. I know that sharks are being harvested off of Florida daily. You know, so I'm not. I'm not, you know, I wasn't trying to take a stand. I was trying to do the right thing, and I thought somebody was illegally killing them.
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The Fish and Wildlife officer who'd been on the phone with John, Officer Barry Partolo, testified he told the court, quote, I advised him as a law enforcement officer, we would never remove anything from a hook or a line without first investigating it. And we would never advise anybody to remove anything from a hook and a line without investigating it. He also said, I told him not to cut the fish off the line. John says he was surprised when he heard that. He says officer Partolo never told him to stop. We reached out to Florida Fish and Wildlife and NOAA for this story, but didn't hear back. A NOAA officer who filed a report on the incident also testified and said that the report didn't include anything about John being told to stop. The trial lasted nearly three days, and
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then the deliberation lasted an eternity. It was like two and a half days of the jury sending notes to us.
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One note from the jury to the judge read, quote, not unanimous. Cannot get there. The jury asked for more specific definitions of certain words like mistake. Near the end of the first full day of deliberations, the judge said the jury was, quote, still very divided. The next day, the judge issued something called an Allen charge, which urges the jury to work harder to reach a verdict to avoid a hung jury. It's also sometimes called a dynamite charge.
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So after our three days, basically, of jury deliberation and deadlock, jury, they said, the jury has come to a decision. And honestly, we had like a, you know, like, we all felt really good about it. And the prosecution looked stressed. And so when the jury came out, you could immediately see on their face that it was bad. You know, like, people, they, like people were avoiding eye contact as they came out. Some of the jurors were crying.
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And that's when I knew. I was like, oh, yeah, they're gonna find us guilty.
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And like the whole courtroom, like, everyone behind us started crying in our side of the courtroom. And. And I was just. Honestly, I was pissed. I was in shock and I was just. And I was pissed.
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We'll be right back.
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the U.S. department of justice issued a press release announcing John Moore and Tanner Mansell's conviction. It began, quote, a boat crew offering tourists the opportunity to swim with sharks took a pause between dives to steal a commercial fishing gear set. What was your sentence?
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The prosecutor was trying to get us to go to jail for five years and pay $250,000.
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They were each sentenced to one year of probation and had to pay back the cost of the long line equipment. And the sharks, they let free.
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And I had one year of community service, which was, you know, I volunteered at the shelter walking dogs. Like that was great. Like it was something I'd like to do.
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Anyway, the judge said, I think their primary motivation was trying to protect the sharks and the ocean life, you know, so the.
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The sentence itself was nothing, you know, was really nothing. No you know, but it's. There's a lot of things that come along with a conviction. You know, it's. With a felony, life changes. You know, I. My daughter lives in Canada. I couldn't go visit my daughter in Canada. She just bought a house, just had a baby. And, you know, with a felony conviction, anything like. Like renting an apartment, you have to put down that you're. You know, we're planning on moving to California, which we finally have. Were able to do. But it, you know, when. As we're applying for houses to ren. You know, you have to put down that you're a felon on the thing which, you know, the most bizarre thing for me, like, I didn't even have. I didn't have a speeding ticket. Like, I had never. You know, this was not my. My wheelhouse.
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Did. Did you appeal?
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Yes, we appealed. And luckily, you know, my attorneys, they. They did it for free. You know, they. They said, we're going to appeal. And I just said, listen, like, I am. I'm completely bankrupt from this. I. You know, I. We lost. I. I can't afford to appeal. And they're like, well, we're doing it, and you don't have to pay anything.
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They appealed on an issue about jury instructions. Three appellate judges heard their case and decided to uphold the convictions. But one of the judges wrote, because I am bound to consider only the single narrow issue raised on appeal, I join my colleagues in affirming, but I do so with reluctance. John Moore Jr. And Tanner Mansell are felons because they tried to save sharks from what they believe to be an illegal poaching operation. They are the only felons I have ever encountered in 18 years on the bench and three years as a federal prosecutor who called law enforcement to report what they were seeing and what actions they were taking in real time.
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And so my lawyers were like, well, we're not done. We are going to see what the next step is. And it looked like it was going to be the Supreme Court.
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But then in May of 2025, nearly five years after John and Tanner found the longline, they both got a phone call.
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It was the day after my birthday. We were walking our dog, and I got a call from my lawyer. She said, john, I have a. Can you talk for a second? I said, yeah, of course. And then she said, I have the White House on the other line. And I was like, what?
D
I was actually on a plane, and the plane started rolling forward, and I started getting a call from my lawyer, and he never calls. He Always emails. I was like, ooh, I wonder what this is like, you know, I didn't know. So I answered. I said, hey, I'm on a plane. It's rolling forward. I've got, like, 30 seconds. What's up? And he said, you were just pardoned by the President of the United States. Congratulations. And I just broke down. I started crying. I was like, oh, my God. Finally, it's, like, some good news. I couldn't believe it. The person next to me thought I was probably crazy.
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They were both shocked because they hadn't even applied for a presidential pardon.
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I could vote again because that was another obvious thing that you couldn't do. And. And if I wanted to have a firearm, which I hadn't wanted, but I could have a firearm again and all that, but you still couldn't. It wasn't recognized internationally. You were still a felon, but you were a pardoned felon.
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Meaning that the conviction along with the pardon would still appear on their criminal records. John would be able to visit his daughter in Canada, but he says in his case, he would have to apply for a special permit. John and Tanner's lawyers started working to get their felony records expunged. They submitted a petition to the original judge who heard their case. John says they were told it might take several weeks to hear back, but they heard the next morning that the judge had cleared their records. John and his wife live in California now. He's still out on the water most days and still guiding shark dives and wildlife tours. How has this changed the way you do your job?
C
I don't know if it's changed the way I do my job at all, but it's changed my outlook on everything else. I'm like, a very optimistic person by, you know, like, annoyingly optimistic for a lot of people. You can ask my wife, and, you know, it. It stripped a little of that optimism from my brain because, you know, it. I always thought, if you do the right thing, then, you know, then. Then the universe takes care of you. And, you know, and this was not the case in that situation.
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Tanner still lives in Jupiter and still leads shark diving tours, but he says he isn't able to enjoy it the way he used to. One day this past summer, he was heading back to the marina after a trip and saw two large gasoline canisters floating in the ocean, leaking gas.
D
And my reaction is always, obviously, is to stop and pick them up and put them, you know, clean up the ocean, Right? So I got there, and I immediately started feeling I was gonna have a panic attack. And. Yeah, no, that was. So I start feeling like I'm going to have a panic attack and kind of everything froze. And I just started feeling like, you know, what, what's in these, these tanks? Right? Like what, what's going to happen if I, if I do this? So, you know, even though I can blatantly see, you know, gas leaking into the ocean, I was hesitant and it took me like a good 5, 10 minutes to like collect my thoughts and be like, all right, this is the right thing to do, and picked them up, took them in.
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Host: Phoebe Judge
Podcast: Vox Media Podcast Network
This episode of Criminal explores the story of John Moore and Tanner Mansell, two shark diving guides in Florida who stumbled across a mysterious long fishing line offshore, entangling and threatening numerous sharks. Believing they were intervening in an illegal poaching operation, they freed the animals and alerted authorities—only to later find themselves prosecuted for theft of commercial fishing gear. The episode delves into the conflicting interests between conservation and fishing, the complexities of fishing regulations, and the profound personal consequences for individuals who try to “do the right thing.” Ultimately, the story culminates in a rare presidential pardon and hard-earned exoneration.
On discovering the longline:
“We realized we found something very odd out here.” – John (05:30)
On shark deaths and fishing community hostility:
“We regularly see gunshot wounds to sharks... you see sharks on the daily with bullet holes in their head.” – John (17:16)
On realizing their actions might have been a crime:
“If we were gonna commit a crime out there, like, I wouldn't be calling the police while I was doing it.” – John (19:02)
During the trial:
“The prosecution argued that we intentionally sought out to destroy this fisherman’s property because sharks are worth more to us alive than dead. So we stole... Essentially, they said we stole the sharks from them.” – Tanner (23:09)
After the guilty verdict:
“Some of the jurors were crying. And that’s when I knew. I was like, oh, yeah, they’re gonna find us guilty.” – Tanner (26:20)
From the appellate dissent:
“They are the only felons I have ever encountered in 18 years on the bench and three years as a federal prosecutor who called law enforcement to report what they were seeing and what actions they were taking in real time.” (30:10)
Upon receiving the presidential pardon:
“You were just pardoned by the President of the United States. Congratulations. And I just broke down.” – Tanner (31:36)
The tone throughout the episode is candid, emotional, and sometimes incredulous, with both John and Tanner expressing a mix of exasperation, sadness, and hard-won perspective. Their narration remains accessible and colloquial, grounded in first-hand accounts and strong feelings of injustice.
"The Longline" exposes the murky waters between environmental stewardship, legal regulation, and commercial interests—showing how fundamentally well-meaning action can become criminalized. John and Tanner’s story is at once a cautionary tale and an exploration of the personal costs of caring enough to intervene for animals—and what happens when “doing the right thing” leads you into the crosshairs of the law.