I posted previously about Robert Ballard on TED.
Exploring the worlds’ hidden oceans

David Gallo is equally enthuasiastic and just as enthralling.

From the TED website:

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.

And this is a seperate, more recent presentation (13 minutes long).
From TED:

With vibrant video clips captured by submarines, David Gallo takes us to some of Earth’s darkest, most violent, toxic and beautiful habitats, the valleys and volcanic ridges of the oceans’ depths, where life is bizarre, resilient and shockingly abundant.

It is a really wonderful world out there, and sometimes I can’t help but feel so incredibly lucky to be living in a time where we get to see so much of it. Right before it all disappears.

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