yes , they do live under water :)
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they live under water probably like open seas
they might live under a rock but they live under the sand during the winter
no they would die under water
They live in salt water (the sea) Because no starfish can live in freshwater
163 meters under water
Yes, Aliens and eggs can live under water. But you will never see them. They live under the sea really, really, really deep.
Because they have adapted to living in salt water.
How could they smell, they live under water
If you mean, "are all under water creatures, sea creatures?" then no. The term SEA is for the ocean and there also can be creatures in freshwater. Also some creatures that live in water such as some snakes and sea turtles come out of the water every so often, so they are no total sea/water creatures. Fish are underwater creatures though.
Yes Dolphins and Sea Otters live in sea water.
a under water sea mount is something under water almost like hill
a sea is an ecosystem because it helps and provides for communities and populations. there is another world of animals that live in the sea. the sea is like above the ground but it is under water (: