Extinction is scary

Sat · Oct 31·8:30 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+.

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 31·10 AM – 3 PM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

Costume parade and spooktacular contest with toddler, family/group, animal, and judge’s favorite categories at San Francisco Zoo, for ages 1–4.

Sat · Oct 31·11 AM – 12 PM·Merced, San Francisco Public Library

Gardening at Merced, San Francisco Public Library offers fresh‑air de‑stress activities, planting and caring for plants, for ages 13–18.

Sat · Oct 31·11:30 AM – 12:30 PM·Randall Museum, 199 Museum Way, San Francisco, CA 94114

Curator discusses rescue animal ambassadors, sharing stories and showing tarantulas, snakes, and birds of prey at the Randall Museum’s Wild in California exhibit, all ages.

Sat · Oct 31·3 PM – 3:30 PM·Presidio Trust · San Francisco

Park Ranger Campfire Talks at Presidio Trust.

Fri · Oct 30·11 AM·San Francisco Zoo & Gardens, Sloat Blvd at The Great Highway, San Francisco, CA 94132

World Lemur Day at San Francisco Zoo showcases lemurs and offers conservation information.

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.