David Gallo shows jaw-dropping footage of amazing sea creatures, including a color-shifting cuttlefish, a perfectly camouflaged octopus, and a Times Square's worth of neon light displays from fish who live in the blackest depths of the ocean.

A pioneer in ocean exploration, David Gallo is an enthusiastic ambassador between the sea and those of us on dry land.

David Gallo works to push the bounds of oceanic discovery. Active in undersea exploration (sometimes in partnership with legendary Titanic-hunter Robert Ballard), he was one of the first oceanographers to use a combination of manned submersibles and robots to map the ocean world with unprecedented clarity and detail.

He was a co-expedition leader during an exploration of the RMS Titanic and the German battleship Bismarck, using Russian Mir subs. On behalf of the Woods Hole labs, he appears around the country speaking on ocean and water issues, and leading tours of the deep-ocean submersible Alvin.