You will not stay alone. The San Francisco Snorkelers community is already waiting.

This chat is deliberately limited to Snorkelers. Expect reef-spot-by-season map frequently, with Pacifica and Farallon as the go-to spots.
Group vibe
Deliberately limited, high-signal, worth the narrower lens.
Example members. Real archetypes drawn from the people who already meet up here.
From Perth
Tahoe snorkel fan
From Cairo
Underwater GoPro hobbyist
From Rome
Snorkel-and-picnic organizer
From Athens
Freedive-curious
One number to sign up. Your group is already waiting on the other side.
Join Snorkelers