Transhuman Space 2110, 2130, 2200

[Flyndaran]

Originally Posted by jeff_wilson

They're not ridicuous, as there are creatures of earthly biology that apparently do without human-like sleep (sharks, dolphins), imperfect memory (Marilu Henner), and bordeom (sharks again).

Dolphins still sleep just in a very odd way, one hemisphere at a time, so they can still swim in circles and come up to breathe. It still takes them out of consciousness, so effectively it's the same as normal sleep.

Holy Moly! I had never heard of perfect autobiographical recall that wasn't accompanied by severe O.C.D. I take back my objection on that subject.
Still, I think forgetting is a healthy defense mechanism.

Boredom is a lack of mental stimulation causing stress. Sharks are simple enough that swimming and looking around is using enough of their brain power to stave off boredom, not that we would know.