National Park Service

Banana Slug traveling across the forest floor.

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.