[zonkerdonker]

The elephant seal really threw me for a loop, so I looked it up and [1]. It's not even close to accurate. I also couldn't verify any recorded dives of chinook salmon that deep either. A bit disappointing, this chart would be really cool if it was accurate

[1] http://mirounga.ucsc.edu/leboeuf/pdfs/PatternDepthofDives.19... (pdf warning)

[plewd]

I believe it's the deepest dive recorded of those animals (or at least that was the case for the narwhal)