Board a semi-submersible for a 45-minute dive beneath Avalon’s harbor and watch kelp forests and reef fish glide by at porthole level. This easy, weather-dependent excursion is ideal for non-divers and families seeking an immediate marine encounter.
Board a semi-submersible for a 45-minute dive beneath Avalon’s harbor and watch kelp forests and reef fish glide by at porthole level. This easy, weather-dependent excursion is ideal for non-divers and families seeking an immediate marine encounter.
Book with Santa Catalina Island Company
Book directly with Santa Catalina Island Company for the best rates and real-time scheduling.
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Operated by Santa Catalina Island Company · Avalon, California
The cabin hums and the harbor slips away — glass portholes framing forests of kelp and darting fish as you sink five feet beneath the surface. In the compact, climate-controlled cabin passengers trade the spray of the bow for up-close views of Catalina’s underwater edges, where garibaldi, sheephead, and kelp bass slice through blue light.
easy.
45 minutes.
Minimal fitness required; ability to board a low-step vessel and remain seated or stand for short periods.
The excursion lasts approximately 45 minutes from departure to return, with live commentary during the cruise.
No — restrooms are only at the base of the Green Pleasure Pier; guests are asked to use them before check-in.
Yes; it’s family-friendly. Infants must sit on an adult’s lap and all ages should be supervised when moving around the cabin.
Tours may be canceled for unsafe conditions; the operator will notify you and all sales are final, so check schedules and arrive prepared.
Avalon grew as a tourist destination in the early 1900s; maritime excursions here evolved from sport fishing and pleasure cruises to modern wildlife and glass-bottom tourism.
Catalina’s nearshore ecosystems are protected through local regulations and Marine Protected Areas—respect no-touch rules and avoid feeding wildlife to reduce human impact.
Santa Catalina Island Company operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




Book with Santa Catalina Island Company
Book directly with Santa Catalina Island Company for the best rates and real-time scheduling.
Reserve Now