1) Ainu legendary creature 
Amemasu (アメマス) or Ō-amemasu (大アメマス) is a giant whale- or fish-like creature from Ainu folklore. It lives in Lake Mashu in Hokkaidō and capsizes boats, creates earthquakes and causes other disasters. In one tale, the amemasu swallows a deer that has come down to the lake to drink, but the deer`s antler tears open the great fish....