What is a marine ecosystem?

Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content.

Explanation:

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e a marine ecosystem is the life underwater like sea creaters ,a weed etc s

Explanation:

online defnation : Marine ecosystems are characterized by the biological community of organisms that they are associated with and their physical environment.

heres a fact Some important characteristics of the marine ecosystem are: They make up 70% of the earth’s surface. They dissolve the salts in their own waters. Supplies food for humans and generates socioeconomic benefits. They fall into the category of aquatic ecosystems

helicase, i think thats it