Marine Ecosystems. Nine Major Marine Ecosystems. Rocky Intertidal Sandy and Cobble Beach Salt Marshes and Estuaries Open Ocean Deep Sea Floor Hydrothermal Vents Coral Reefs Polar Ocean Kelp Forest. Rocky Intertidal.
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This marine community is where the ocean meets the land. It is a very harsh environment. There are some species who have adapted well to this environment. It experiences the extremes of the ebb and flow of the tides.
This marine community has super-heated water. It contains white and black smokers. Bacteria are the primary producers and make food through chemosynthesis. Deep sea fish are at the top of the food chain in this environment. This environment could have been the starting point for life on Earth.
This marine community is found along coastlines, in cool waters. El Nino can have devastating affects on this environment. It contains large communities of brown algae. The keystone species are the algae, purple sea urchins, and sea otters.