Invertebrates of Muir Woods

Banana Slug
Banana Slug traveling across the forest floor.

National Park Service

Visitors to Muir Woods often comment on the lack of wildlife. But if they were to get out a magnifying glass, they would see that life in the redwood forest is not only abundant, it is everywhere; it's just smaller than they expected. From the dramatic and beautiful, such as butterflies and slugs, to the microscopic, such as springtails, the invertebrates of the Monument play a vital role in the health of Muir Woods.

Last updated: February 28, 2015

Park footer

Contact Info

Mailing Address:

Muir Woods National Monument
1 Muir Woods Rd

Mill Valley, CA 94941


415 561-2850

Contact Us