A healthy environment is vital to productive and sustainable fisheries, safe sources of seafood, and the conservation of protected species.

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The Arctic ecosystem is changing rapidly: temperatures have increased more than twice the global average and sea ice is continuing to diminish sharply.

Bowhead Whales in the Arctic


In the Antarctic, we investigate the effects of commercial fisheries on the ecosystem, including impacts to local seal and seabird populations.

Antarctic investigators

Bering Sea

The southeastern Bering Sea supports some of the most valuable commercial fisheries in the world for salmon and walleye Pollock. These resources face climate-related impacts to their ecosystems.

Bering Sea

California Current

The California Current supports small fishes like sardines, anchovies, and herring that serve as food for larger species, including migratory fishes, birds and mammals. Overfishing and climate change are threats here.

California Current Environment Thumbnail

Caribbean Sea

The Caribbean Sea ecosystem provides important habitat for fish and protected species, but face challenges such as coral disease and bleaching, hurricane impacts, and pollution.

Caribbean Sea

Chesapeake Bay

The Chesapeake Bay is the largest estuary in the United States and is home to more than 250 species of fish and shellfish. However, more than 60 percent of the historic wetlands in the Bay no longer exist.

Chesapeake Bay Estuary