I co-authored a paper published this week concerning the high extent of pollution in the deepest point of the Mediterranean Sea: the Calypso Deep. I dove there with Prince Albert of Monaco in 2020. Sad reading. Please, please don't put plastic in the sea:

@EdwardDenmark44 Yes, it would. I believe humanity needs this tool in its technological toolbox in case we do something awful, either accidentally or deliberately.

@BenLamm Congratulations to Ben and the whole Colossal team! Amazing progress being made.

A picture from today, cutting the cake commemorating the naming of T-AGOS 26. That is my sister in the middle -the official sponsor of the ship, and Secretary of the Navy Del Toro to the right, who named it.

@SofiaSerbia Alas, I can't help what is behind a paywall at what is not. Others may be able to view. Or you can use this helpful site to view the archive of the story:

The math: Forecasted Indonesian Nickel production in 2024: 2,100 kilotons. 1/3 reduction = -712 kilotons. TMC max production (from their own investor materials) = 119 kilotons/year. So: 712 ktons / 119 ktons = 6x.

@deepseadawn @LEGO_Group Glad you liked them . . they are a perfect fit for you!

People ask: "Why bother mapping the seafloor?" Well, here's one reason . . . (In Oct 2021, the USS Connecticut hit apparently, an unmapped seamount, costing $80M in repairs and putting her, our most capable submarine class, out of action for five years.)

@JeremieMorizet @Cite_de_la_Mer @DeepOceanSearch @InkfishExplore An honor to have dived with Mssr. Morizet and finding the deepest shipwreck in history with him (the USS Samuel B Roberts). So deserving, and a great example of the French spirit of exploration and adventure.

By Christmas, TCarta, Greenwater Foundation, and my firm will complete mapping 217,560 square km of coastal seafloor across twelve different countries using satellites. It will be the largest sat-derived coastal imagery block ever donated to Seabed2030.

I'd like to thank Jordan Harbinger for having me on his great podcast. I really enjoyed speaking with him and we covered a lot of topics including, of course, risk management. (A key life skill, IMHO) BTW, Triton Submarines engineered the sub, not me.

@ThePlanetaryGuy About two kilometers to the southwest of where this picture was taken, was a pretty massive vertical wall of broken rock at least 75 meters high and near-vertical. I nicknamed it "El Capitan of Challenger Deep." Impossible to photograph because you can only see about 30 meters.

@elonmusk I made this recommendation back in 2002, in the US Navy's Magazine "Proceedings": To cancel the Navy JSF (F-35) in favor of drones -- back when it could have made a difference:

I recently partnered with two authors to continue my financial, technical, and technological critique of deep seafloor mining (DSM). I continue to believe that the non-environmental aspects will make it fail. Technology has moved on from making it viable.

Additional results of satellite-derived bathymetry efforts, funded by my firm with the Greenwater Foundation and TCarta. Added a total of 8,017 new sq km of seafloor for Seabed 2030 in the Solomon Islands and Vanuatu. See: and