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Point Reyes National Seashore Nonnative Species
Of the over 900 species of plants in Point Reyes National Seashore, approximately 300 are non-native. Of those, at least 30 are invasive enough to threaten the diversity of native plant communities in the Seashore. The Seashore also supports 51 special status (rare) plant species, many of which are directly affected by invasive non-native species.
There are also nonnative species of many other organisms such as mammals, reptiles, and marine organisms.
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.