The Port District of San Diego works diligently to protect the Bay's natural resources. As a result, wildlife abounds on San Diego Bay. Learn more about the Bay's premiere nature centers below.

Sweetwater Marsh National Wildlife Refuge and Chula Vista Nature Center

With 316 acres of salt marsh and coastal uplands, Sweetwater Marsh National Wildlife Refuge includes the largest emergent wetlands area remaining in San Diego Bay. Principle endangered species include the California least tern, light-footed clapper rail, salt marsh bird's beak plant and Palmer's frankenia. The Sweetwater Marsh National Wildlife Refuge it the only place in the United States where Palmer's frankenia is found. In addition, the refuge - an important shorebird and waterfowl habitat - has more than 200 species of birds recorded.

The Chula Vista Nature Center, operated by the Friends of Chula Vista Nature Center, is located on site and has extensive interpretive programs including: formal environmental education classes, monthly newsletter and volunteer programs. This living museum serves the public with educational programs and exhibits. It is leading the way in the restoration, preservation and enhancement of the surrounding wetlands. From the observation tower and deck you can witness the daily lives of more than 200 species of birds', some are endangered and all are beautiful. To view these birds bring your binoculars or rent a pair at the center's bookstore. Take a walk on the bilingual interpretive trails within the National Wildlife Refuge.

South Bay Wildlife Refuge

The Port District acquired the 2,200 acres of South Bay Wildlife Refuge land in 1998 for the development of a wildlife refuge. Although it is closed to the public, the refuge is home to more than 560 plant and animal species, including eight endangered or threatened species. The South Bay Wildlife Refuge is also a crucial link for hundreds of thousands of migratory birds that travel along the Pacific Coast from Alaska to South America. It is an internationally important site for nesting seabirds, migrating shorebirds and wintering waterfowl.