Generally no, that's the realm of the crtustaceans like crabs, lobsters and shrimp. I can't think of any insects that are in the marine environment except those that might occur in the marine/freshwater boundary like where rivers enter the ocean.
In a marine environment.
Some of the plants that grow in the marine biome include kelp, seaweed, and sea wacks. There are also insects found in the marine biome and they include sea skaters and midges.
A marine biologist studies the plants and animals found in marine environments. They also look at the way these organisms react with their environment.
coastal estuary
Aquatic and mostly marine environments
it affect marine environment, because the people get coral reefs that make polluted the marine environment
Marine Debris kills the environment by polluting. Marine debris can kill marine life and it makes the area dirty and nasty.
It can provide evidence of the environment the area was in in the past. For example, if you found a fossil with tentacles, you could guarantee that it is a marine creature (as tentacles are useless on land). You can then go on to imply that the rock was also formed in a marine environment. An example is shale, which is formed in a tranquil marine environment. This gives evidence of the past environment and also climate. Coal is also a fossil. A coal seam is sure evidence of a warm climate and a deltaic/marshy landscape.
it gets nutrients from the insects which it could not from the environment.
Marine commercial engines are used for powering ships. Details regarding their functions can be found in the U.S. Environment Protection Agency's website underDiesel Boats and Ships.
That would be Estuary.
The killer whale's environment is aquatic; specifically, it requires a marine environment. Killer whales are found in oceans all over the world. They are not restricted to any particular temperature range.