World lemur day

Fri · Oct 30·8:30 AM – 4:30 PM·San Francisco, CA (Farallon Islands)

Eight‑hour naturalist‑led whale watching expedition sails from San Francisco under the Golden Gate Bridge to the Farallon Islands, featuring an expert naturalist, $320 per person, ages 13+.

Fri · Oct 30·9 AM – 12 PM·Presidio Trust · San Francisco

Volunteer with Presidio Forest Stewards at the Presidio Trust.

Fri · Oct 30·3 PM – 3:30 PM·Presidio Trust · San Francisco

Park Ranger Campfire Talks at Presidio Trust.

Fri · Oct 30·5 AM·Event Location, San Francisco

Cycle track open before 2:00 PM at Event Location, San Francisco.

Thu · Oct 29·1 PM – 4 PM·Presidio Trust · San Francisco

Volunteer: San Francisco Habitat Stewards at Presidio Trust.

Sat · Oct 31·9 AM – 12 PM·Presidio Trust · San Francisco

Presidio Habitat Stewards at Presidio Trust in San Francisco.

Sat · Oct 31·9:30 AM – 12:30 PM·Burning Man Decompression (SF) · San Francisco

Experience a Halloween‑themed three‑hour nature walk among wild horses, jackrabbits, coyotes and new sculptures at Burning Man Decompression’s Fly Ranch.

Sat · Oct 31·11 AM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

Learn about the zoo's critically endangered species at the San Francisco Zoo & Gardens.

Wed · Nov 4·9 AM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

Free admission for San Francisco residents at the San Francisco Zoo & Gardens with proof of residency.

Thu · Nov 5·8:30 AM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

Guided walking tour of the San Francisco Zoo lets participants explore almost the whole zoo alone, for ages 55 and up.

Fri · Nov 6·5:30 PM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

ZooLights (San Francisco Zoo & Gardens) — All‑new winter holiday lighting display illuminates the zoo.