Killer whale, humpback whale, sharks, dolphin, those would be some of the top predators. But smaller animals like crustaceans and krill are just as important.
they are an animal and they do live on the seas
Whales live in the oceans, especially the polar seas where there is a lot of food, such as fish and plankton.
Blue Whales inhabit all but polar seas (They live pretty much everywhere).
if you mean the rivers, lakes, streams, seas, and oceans than the animals that live in that is seafood. Like fish, crabs, and crawl fish.
The Sperm Whale.
cold water
Yes. There are many species, and some are found in all seas, even the polar regions.
In all of the oceans and all but the polar seas.
Tropical seas.
Sponges are aquatic animals that live in freshwater or marine environments. They can be found attached to rocks, reefs, or other hard surfaces on the ocean floor. Sponges are filter feeders, meaning they pump water through their bodies to collect food particles.
The advantage for living in the polar regions are that during the increasingly short "growing season" where temperatures are above about 3˚C, the high nutrient levels of polar seas means that extremely high densities of animals can be supported compared to hot climates where soils tend to be very old and infertile. These rich fisheries - though they are actually less rich where sea ice occurs for most of the year - allow for dense populations and much more rapid breeding that possible in hotter seas.
Rising seas cause floods and can destroy animals' homes! Not to mention drowning animals and killing plants.