Marine ecosystems are aquatic environments with high levels of dissolved salt. These include the open ocean, the deep-sea ocean, and coastal marine ecosystems, each of which has different physical and biological characteristics.
5 - 8
Biology, Ecology, Conservation, Earth Science, Oceanography
Coral Reef State Park
Coral reefs are a diverse form of marine ecosystem, which in total may account for a quarter of all ocean species. Several types of fish and coral are shown here at John Pennekamp Coral Reef State Park in Florida, United States.
Photograph by James L. Amos
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October 19, 2023
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