Scott Cassell completes 30 mile dive from Catalina to San Pedro

At 6:15pm Saturday, Scott Cassell arrived safely at Cabrillo Aquarium Beach in San Pedro Harbor after covering 30 miles in a single day of diving. Using a computer controlled mixed gas rebreather, a DUI drysuit with an argon inflation system, 4th Element Halo 3D thermal protection, and dual Luminox dive watches, he completed the distance in less than 12 hours, after some technical issues delayed the planned 4am start time by several hours.

ScottCassell 5168 2 Scott Cassell completes 30 mile dive from Catalina to San PedroScott’s journey was filmed in 3D by Global Reef to help raise awareness regarding the alarming state of our oceans. One of his primary missions during today’s dive was to attract as many sharks as possible to obtain an accurate estimate of how many sharks are still present in the area today. Sadly, at an interview on the beach just after surfacing, he said he didn’t see a single shark over the 30 miles he covered.

“I saw 3 Mola Mola, 4 Sea lions, about 6 Dolphins and a huge school of sardines. But I didn’t see a single shark – and that breaks my heart. It’s absolutely a tragedy.” Scott then reflected on his dives back in the 1980′s and 90′s, where he would often swim with 60 or more sharks on a single dive.

Currently, sharks are slaughtered at a rate of 100 million a year worldwide – more than 200,000 sharks a day.

Following the dive, a reception was held for Scott and his supporters and sponsors at the Cabrillo Marine Aquarium. After answering questions about his incredible dive, Scott elaborated on the state of our oceans.

“Unfortunately, I’m the generation that has seen the ocean start to die. It’s a reality. And not understanding this is not okay anymore. We need to think and be a good, responsible culture.”

“We’ve only explored 0.5% of the ocean habitat – over 99% of the ocean is left to be explored. That’s encouraging, inspiring – and frightening. Because if we have systems failing in the ocean, and we don’t understand how these systems work, how are we going to fix them”?

ScottExits 5153 Scott Cassell completes 30 mile dive from Catalina to San Pedro


Scott received support and assistance from many volunteer divers and contributors. There were 34 people in 5 boats providing surface support from Catalina to San Pedro, including Chris Wade, captain of the Sea Watch who provided use of his 70-foot research boat. Luminox will also give a portion of the sales of his limited-edition dive watch collection to Sea Wolves Unlimited and the Project Voyager Foundation.

While Scott had hoped to complete the entire 30 miles without surfacing, due to an equipment malfunction he briefly surfaced one time to remedy the probem and get some much-needed nutrition.

We’re very fortunate and thankful that Scott’s team invited California Diver Magazine to attend this wonderful event, and we’ll provide much more in-depth coverage in a future issue of California Diver Magazine.

Below are a few videos shot as Scott exited the water. First, Scott discusses the sharks he didn’t see during today’s dive:

Scott discusses the toll a 30-mile dive takes on his body:

Scott is President of The Undersea Voyager Project – a non-profit organization that advances and communicates scientific knowledge and understanding of the Oceans to scientists, educators, families, and political figures of every nation.Read more here:

Words & Photos by Chris Constantine, California Diver Magazine

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18 Responses to “Scott Cassell completes 30 mile dive from Catalina to San Pedro”

  1. What a great story. This is very inspiring. Nice job on the story and photos too California Divers Magazine!

  2. Congratulations Scott!

  3. That was quick, I thought it was supposed to be scheduled or something…other then that. You go Scott!

  4. The issue of our oceans dying along with the many creatures who live in the oceans truly needs to be made the most important issue of our time! It’s great to see Scott taking a lead along with California Diver Magazine to focus on this critical issue. Thank You so much for sharing! You got my attention.

  5. Congratulations! What an accomplishment. Cheers to you and your support Team!

  6. Unfortunately, I am also the generation that has seen the ocean start to die. It’s a reality. And not understanding this is not okay anymore. We need to think and be a good, responsible culture… fundamental change must now be the responsibility of all citizens Globally, as governments are NOT heeding the advice of the International Union for Conservation of Nature and Natural Resources, the Convention on International Trade in Endangered Species of Wild Fauna and Flora and other International and National bodies. There is substantial evidence and irrefutable proof that enough voices heard via readily available online petitions, easily found on most social networks, motivates and initiates necessary action. All that is required for one to do is enter their name and email then click “sign”
    You can make a difference – our lives begin to end the day we are silent about things that matter.

  7. What a great story and photos! I’m really excited to see more in the printed California Diver Magazine in the coming months,and we’re subscribing right now. A huge congrats to Scott and a big thanks for covering this epic event!!!

  8. Nice job Scott! Enjoyed meeting you at the Blue Ocean film festival. Mark

  9. Great job Scott on so many levels, and the incredible support team that made it all happen. Keep the faith and keep charging forward for to bring light to issues that effect us all, you are a true hero!

    Can’t wait to hear about your next big expedition!

  10. Word on the street is that parts of this effort was faked. Is this true? Was the diving bell functional at all? If not how did Scott do this swim?

    Additionally there’s NO WAY this was 30 miles Google Earth says it was 25 miles I am told it was a total of 18 miles some of it with Scott sitting on a support boat.

    Time for Scott and his entire support team to come clean with the facts and the truth. If Scott is going for a record we need the hard facts!

  11. Scott did an unbelievable job of toughing through this but the team that supported him was incredible as well. Everyone involved should be proud of their role in this. Winston Churchill once said “Never, never, never, never give up.” Scott and the team embodied that spirit in its fullest sense. Their goal was to raise awareness about the state of the oceans and the declining blue shark population. Job well done.

    Thank you all.

  12. Scott has been totally up front about everything that happened including nearly dying twice during the dive..
    If you read carefully you would know that Scott had to give up the record attempt after having to surface or die. That was blogged live right after it happened. We knew then we had lost the record and made that clear but he wanted to finish. He sat on a support boat for nutrition and a break after blacking out underwater.
    Nothing was faked.

  13. @Dave
    Nobody has faked anything. Scott had to abandon the record after a struggle with a tank change out almost cost him his life. That information was blogged by us almost immediately after it happened. He then decided to finish the transect if possible anyway to raise awareness.

  14. Hi Dave.

    I was on the water on this expedition as part of the team.

    The facts are clear- as you can see from the video posted above. While Scott was underwater, the vessel Sea Watch was unable to deploy the dive bell. An alternative plan- to change- without the bell- from his rebreather to tanks, were not successful. So Scott had to surface.

    Scott was going for a record, to do the transect from Catalina to LA Harbor without surfacing. He had to surface. This means that the chance of a world record was blown. He did, however, then rig up again, and get back in the water.

    This wasn’t just about a world record. He had hoped to do it without surfacing, but wasn’t able to. But he kept going, using the support vessel to change to tanks, and then as he approached the harbour, to get back into a lighter rebreather so that he could walk out of the water at the finish.

    His efforts were not faked. His efforts were astounding. He didn’t get a world-record for doing it without surfacing, but he showed us all that it is possible to just keep going, even when things don’t go as planned.

  15. @Dave-
    I’m not sure who you are or who you are getting misinformation from but please check your facts before accusing Scott or any team member of faking anything!
    I for one am very offended that you would post such garbage without clearly identifying who you are or where you are getting this information.
    Its clear you are a troll of some sort looking to discredit an honorable man and the folks that stand with him 100%.
    Continue to do so and you’ll be hearing from a lawyer or two!

  16. We are so proud of Scott!!!! He’s a remarkable man and advocate for sharks. He’s doing what we all should and that is get out and DO SOMETHING!

  17. Wow, 30-mile dive! That’s an amazing endeavor. What a sad news about the sharks. Take actions: 1. urge our governor to sign a ban on shark fin trade in California (, and 2. learn how to choose sustainable seafood for your table (

  18. Great dive! I’ve been telling people about this.

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