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Four Finnish cave divers set out on a recovery mission when two of their friends drowned deep inside an underwater cave in Norway.

A new technology allows scientists to learn more about enormous underwater avalanches.

Learn more about how the *Hilma Hooker* went from a drug-smuggling ship to a beloved scuba diving site in Bonaire.

In1942, German U-boats sank more than 80 ships off North Carolina alone.

Check out the latest purpose-sunk shipwrecks for scuba divers in Sabah National Park, Galveston, Texas and Pernambuco Artificial Wreck Marine Park.

Spider crabs were caught migrating early this year in Melbourne, Australia. Check out this incredible underwater video from an Australian scuba diver.

A photographer, a kite-surfer and a freediver witness the interaction of a lifetime with killer whales in Norway.