Blubber is an efficient insulator that helps sea lions maintain their body heat in cold water. Although sea lions are covered with fur, their fur alone may not be enough to insulate them adequately. Blubber provides an extra layer of insulation that helps keep them warm.
Buoyancy
Blubber's low density helps sea lions float and maintain their buoyancy in the water. This is crucial for sea lions, as they spend a significant portion of their lives in the water.
Energy Storage
Blubber also serves as an energy reserve. When food is scarce, sea lions can rely on their blubber for energy. The stored fat in their blubber can provide them with the necessary sustenance during times of limited food availability.
Overall, the layers of blubber play a vital role in the survival and adaptation of sea lions to their marine environment. They aid in thermoregulation, buoyancy, and energy storage, allowing sea lions to thrive in cold waters and engage in various aquatic activities.