Here's why:
* Food sources: Whales migrate to follow their prey, which often move seasonally in search of warmer waters or more abundant food sources.
* Breeding grounds: Many whales migrate to warmer waters to breed, giving their young the best chance of survival.
* Calving grounds: Whale calves are born in warmer waters where there is more food and less danger from predators.
* Climate: Whales may migrate to avoid colder waters or to take advantage of seasonal changes in food availability.
Different species of whales have different migration patterns:
* Humpback whales: Famous for their long migrations between breeding and feeding grounds.
* Gray whales: Make one of the longest migrations of any mammal, traveling from the Arctic to the warmer waters of Mexico.
* Blue whales: Migrate seasonally between feeding grounds in cold, nutrient-rich waters and breeding grounds in warmer waters.
Some whales, like the beluga whale, are more localized and may not migrate long distances.
Overall, whales are dynamic creatures that move around to meet their needs, whether for food, breeding, or climate.