<span>It is a way to camouflage the squirrel in a changing habitat.</span>
Ocean waters has its own level of density which depends of the climate, temperature and most of all the location where it came from. The more the ocean water absorbs heat the more its density as a result it rises above from cold to hot. So the the water from the Antarctica usually is less dense and then become more dense when it goes to the equator which is more hot.
<span>the answer for this is Thalamus</span>