[hoorayimhelping]

I kept thinking "wow, that has to be the deepest diving air breathing animal here," and I kept being amazed at how deep some animals can dive.

[Barrin92]

I was super surprised by the penguins, the emperor penguin dives 500 meters deep? That's impressive

[peteretep]

Yah, mammals keep butting in all the way down to three k, which is much further than many animals I think of (incorrectly) as being bottom dwellers, like angler fish