Neither actually, they take 10-30 minute periods throughout the day in which half of their brain is asleep for.
A dolphin is not nocturnal... Dolphins sleep with one half of their brain plus one eye closed, then switching to the other side of the brain and the other eye closed during other parts of the day -- slowing down everything inside their bodies and moving...in other words are not nocturnal, they hunt during the day and sleep during the night...like humans.
Dolphins function better day and night.Day and night are equal.
neither...if it were to fall asleep, it would die
they eat there meal every day to keep them alive
they are diurnal because they are never spotted during the night. they always apear at the surface during the day not the night. eventhoug people say that they are nocturnal i think that they are diurnal. if you think that you are a smart person please think. when have you ever seen a picture of a killer whale are any whale at night? think and dont be and idiot WELLLL.. i beg to differ.. I know for a fact that blue whales do not sleep. This is because if they did, then they would drown. Think about it, how to whales breath? through their blowholes. How do they breath if they are sleeping? They don't. That's why most whales, it not all, are neither nocturnal or diurnal, because they dont sleep. Also, whales dont have involuntary breathing, they have to think about breathing and they have to make sure that they actually breath every 30 minutes or so. They do, however, take little napes now and then, but other than that, they get their energy from their food. Now it's time for you to think and stop being an idiot because CLEARLY most of the whales would be dead if they slept. If you dont believe me, then look up 'do whales sleep', and you'll find that they either dont sleep, or half of their brain sleeps at a time, like dolphins.
They Sleep at Night.
They don't ever sleep they swim all day
Tigers sleep all night, and part of the day.
they sleep at night
Generally they sleep at night
it comes out at day
Yes. They sleep frequently at all times of the day or night.