On: Seal-mounted camera recovered after 3 years on oce...

[kortex]

These seals sleep on the ocean floor? Seems like tempting fate a little bit! Must be some strong evolutionary pressure not to just sleep on land.

[stewbrew → kortex]

This way they can probably cover greater diatances. Could also be it's more relaxing to take a nap at the bottom of the sea with the family far away.

[MauranKilom → kortex]

...but how? They have to breathe? How long can they sustain on one lung volume of air if they can sleep underwater?

[bbarnett → MauranKilom]

You need much less air when sleeping, compared to being awake, and much less sitting still, than moving. Two reductions there.

If they can last even 10 minutes under, while moving, I'd think they can last hours while sleeping.

[TechBro8615 → kortex]

Unexpected to me. As a seal, I like my chances escaping from a wolf on a rock better than from a shark on the ocean floor. I can escape land predators by jumping into the water, but I can’t escape aquatic predators unless I happen to be able to outswim them to some nearby land mass.

[dotancohen → TechBro8615]

You type very well for your species. What type of input device do you use?