Marine Ecosystems

Climate change is altering U.S. marine ecosystems in unprecedented ways, leading to shifts in species’ location, productivity, and seasonal timing. This poses risks to fisheries, tourism, recreation, transportation, energy, and other economic sectors—and also undermines critical connections between people and the ocean, especially within Indigenous communities.

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Key Messages
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  • Unprecedented climate impacts threaten ecosystems and human well-being.
  • Climate change is altering marine-related economic activities.
  • Our future ocean depends on decisions today.

From the Ocean Ecosystems and Marine Resources chapter of the Fifth National Climate Assessment

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Image Credit

Scene from a survey dive near Catalina Island, just off the southern California coast. Photograph by Adam Obaza, NOAA Fisheries, CC BY-NC-ND 2.0, https://creativecommons.org/licenses/by-nc-nd/2.0/ via Flickr