My wife just turned on National Geographic in time to hear the announcer say that Emperor penguins can dive to a depth of 500 meters: 1,600 feet!

Wow!

Then they had a guy who caught a 90 lb. Antarctic cod! That's a small one for him: his biggest was over 200 lbs.!

Wow^2.

 

In comparision... I can go about 10 feet until my ears start to ache from the pressure

 

That's because you're not a penguin...actually, I don't know you, you could be a defective penguin

 

The deepest free dive I've done is about 10 meters... and that was in Cuba, when I was in better shape, and wearing snorkelling gear. I went down to look at the bottom, peek at some fishies. 500 meters? eep