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Lake Clark National Park and Preserve Watersheds
One of the primary reasons Lake Clark National Park and Preserve was established was protect a portion of the Bristol Bay watershed for the perpetuation of the sockeye salmon fishery.
The watershed, the world's most productive spawning and rearing habitat for sockeye salmon, contributes about 50% of sockeye salmon caught in Bristol Bay. This represents 33% of the entire U.S. catch, and 16% of the total world catch.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.