This layer of blubber acts as insulation, and it also provides seals with energy stores for when they are not foraging.
This layer of blubber acts as insulation, and it also provides seals with energy stores for when they are not foraging.
这层脂肪不光使海豹可以抵御严寒，同时也是海豹在食物不足的时候的营养储备。