In marine mammals (seals, whales), a layer of subcutaneous adipose tissue is distributed throughout the body.

In marine mammals (seals, whales), a layer of subcutaneous adipose tissue is distributed throughout the body. In camels, zebras, fat is stored in certain parts of the body. In connection with what such features of fat deposition could have developed in these animals?

Firstly, this is due to the living conditions of animals. Whales, seals, etc. water is the main habitat. Fat is distributed throughout the body, since these animals must have a streamlined shape for better swimming – if the fat sticks out in one place, they will not swim far and will be eaten.
Camels, zebras do not have this. On the contrary, it is better for them to have deposits in one place and replenish them. This is a kind of stock.