They are marine mammals, though. Your link says that their numbers are projected to decline by 30% by 2050. They're very good swimmers, but they still need a p

They are marine mammals, though. Your link says that their numbers are projected to decline by 30% by 2050. They're very good swimmers, but they still need a place to sleep. They're smart and adaptable, but they are also ambush predators with bright white fur who need a lot of calories and mostly eat seafood.