Where does water temperature affected marine life?

the salinity level effect what animals live in that body of water. certin animals need certin amounts of salt and others can't have a too high salinity level so only certin types of marine life and live in a certin part of water. pods of herring and other fishes like that live in the atlantis oceans because they won't die from the huge amount of salt in the water and they need salt water to live reporduce and live.