Whales evolved in coastal marine waters. One of the adaptations they have is to be able to live in salt water. This adaptation is so important that now they are unable to live in fresh water. Cara On Tue, 21 Apr 1998, CHIPPY6 wrote: > Why do whales live only in oceans? Why can,t they live in the Great Lakes? > > Thank you, > chippy6@aol.com >