They don't because then they will have no energy and then die.
Yes, they have to have food to survive.
the sea
They use their giant mouths.
They store extra fat reserves in their blubber during the summer when the feeding is good. This allows the whales to go months without food.
Blue whales are carnivores, although they only eat very tiny things, no bigger than your pinky finger. Their favorite food is krill, or shrimp-like euphausiids, that are up to three inches long. Blue whales must eat two to four tons of krill a day during the feeding season to survive the rest of the year.
You're thinking of Antarctic Krill, Euphasia supberba, the base of the food chain in the Southern Ocean that surrounds Antarctica.
it's an insect it can survive for three monyhs without food
Blue whales are ocean dwelling mammals, they need the water to support their body weight, and for their food. The possibility of blue whales going into Mt Everest is 0.
Blue Whales communicate when they are in long distances and they want to navigate, detect food and predators attract, mates and maintain social blond,
Female gray whales spend up to six months in warm food-free waters near the equator. What's more surprising is that they nurse for this entire period.
Well they are not. lol. every live creature needs some sort of food to survive. some kinds are collecting food in there bodies or something but none of them can survive without food :)
cant!