* Energy storage: Blubber is a rich source of energy that whales can use to fuel their long migrations and dives. When whales need energy, they can break down the blubber into fatty acids and release them into their bloodstream.
* Insulation: Blubber helps whales to stay warm in the cold waters in which they live. It acts as a barrier between the whale's body and the cold water, preventing heat from escaping.
* Buoyancy: Blubber helps whales to stay afloat. It is less dense than water, so it helps to keep whales from sinking.
The amount of blubber that a whale has varies depending on the species. Some whales, such as the blue whale, have a very thick layer of blubber, while others, such as the sperm whale, have a relatively thin layer.
Blubber is an important adaptation that helps whales to survive in their harsh environment. It provides them with energy, insulation, and buoyancy, all of which are essential for their survival.