Where are the ***** minks?

Seemingly all mammals can be minks (or perhaps it's actually more accurate to say all minks correspond to a species of mammal) so.. aren't there whales, dolphins, and other marine life mammals? The whale in the sacred forest is likely a clue to something much deeper, it's weird everyone seen that part and didn't all of a sudden stop and say "so where are the whale minks?"

(I know some people will say whales and other mammals can't be minks because a lack of hair, but that's actually wrong. Minks actually refer to humans as "hairless minks" and I think to his might actually be a clue to either the location or what actually happened to the whale minks.)