The park features a natural bridge across a section of the beach and a eucalyptus grove provides habitat for monarch butterflies.

The Ohlone were a semi-nomadic tribe that hunted game and marine mammals and supplemented their diets with shellfish, fish, edible roots and shoots, acorns, nuts, and seeds.

[3] The displacement of the natives began with the Spanish colonization of the Americas when missionaries and soldiers brought the Ohlone into the missions.

[3] Natural Bridges State Beach is home to a eucalyptus grove that provided habitat for monarch butterflies.

Up to 150,000 butterflies migrate up to 2,000 miles (3,200 km) to the park to escape the cold weather of winter in the northwestern United States and Canada.

At Natural Bridges State Beach they find shelter from the wind and sources of water and food.

Biologist attribute the decline to a lack of habitat caused by fallen pine and eucalyptus trees.

[8] Tide pools at the beach provide a glimpse into marine life habitat for visitors to the park.

In combination with the estuarine mouth of Moore Creek, the state beach provides habitat for a variety of bird species, such as shorebirds, gulls, and snowy egrets.

Hiking trails pass through the Moore Creek estuary and the Monarch Butterfly Nature Preserve.