Salt water, but I thought they were pretty cool:

wow those are some weird lookin fish! specially the second one... where only its brain cavity is translucent haha

bioluminescent creatures. the many ways creatures adapt to survive, blows my mind  :-/

That fish with the transparent head is called a barrel eye.  It's found off the coast of CA.  Why arent bass like that?   ;D

Cool video Robert.  What I wonder is, at 2,000 feet and no skeletal structure around the head, how does it keep itself from imploding?

Cool video Robert. What I wonder is, at 2,000 feet and no skeletal structure around the head, how does it keep itself from imploding?

magic

Cool video Robert. What I wonder is, at 2,000 feet and no skeletal structure around the head, how does it keep itself from imploding?

Internal pressure=external pressure. I don't get how anything works at that pressure though.

I figure the fish has an internal pressure, but at 2,000ft. it just doesn't seem possible.

Dave, FWIW, I have been thinking about the magic theory, I'm not convinced.  ;D