Photo: Rhododendrites, CC BY-SA 4.0Forget coral. California snorkeling is swaying giant kelp forests, orange garibaldi, curious sea lions and, off La Jolla in late summer, harmless leopard sharks gliding over the sand. The water is cold, but the wildlife is worth the wetsuit.
Cold water, giant kelp forests and protected coves define snorkeling in California. The classics are in Southern California: La Jolla Cove and La Jolla Shores in San Diego, and Casino Point on Catalina Island. Expect garibaldi, California sheephead, opaleye, sea lions and harbor seals, and from late summer, leopard sharks in the shallows off La Jolla.
The water is cool all year, so plan on a wetsuit. Summer is warmest and calmest, and early fall is often the clearest. Many top sites sit inside marine protected areas where nothing may be taken, and NOAA asks you to keep 50 yards from seals and sea lions.
This hub links to the three areas we cover in depth, with spot cards, tours and local rules for each. Further north, Channel Islands National Park has some of the state's best kelp, reached by boat.
Tap a spot to see what it is like, then open its guide or get directions.
Tap a card for spotting tips and the Guardian rule for each animal. Filter by what you most want to meet.
California's bright orange state marine fish. Males guard their rocky nests fiercely and will swim right up to your mask.
Guardian rule: Fully protected in California. No taking, ever.
Hypsypops rubicundus
A fast-growing seaweed that rises from the rocks to the surface and forms underwater forests along Southern California. Sunlight through the fronds is the classic California snorkel view.
Macrocystis pyrifera
A big wrasse with a black head and tail and a red middle in males. It crunches urchins and crabs in kelp and rocky reef.
Semicossyphus pulcher
An olive green fish with bright blue eyes that schools in shallow, rocky water and tide pools along Southern California.
Girella nigricans
Playful, noisy and fast in the water. Sea lions haul out on rocks around La Jolla Cove and Catalina and sometimes zoom past snorkelers.
Guardian rule: NOAA asks you to stay at least 50 yards (150 ft) away. Never approach pups, and let curious sea lions come to you.
Zalophus californianus
A spotted, round-faced seal that rests on beaches and rocks in Southern California. Shyer than sea lions, it often slips into the water if people get close.
Guardian rule: Stay at least 50 yards (150 ft) away, especially during pupping season.
Phoca vitulina
A harmless, spotted shark that gathers by the hundreds in the warm shallows off La Jolla Shores in summer. Most of the females are thought to be pregnant.
Spotting tip: Swim slowly over sand in 5 to 10 ft of water on calm, sunny summer days.
Guardian rule: Watch from above and let them pass. Do not chase or touch them.
Triakis semifasciata
A gentle giant that can grow over 7 ft and 500 lb, returning to La Jolla and Catalina kelp beds in summer after decades of protection.
Guardian rule: Protected in California. Watch calmly and do not chase.
Stereolepis gigas
For snorkeling in San Diego, head to La Jolla: a cold, kelpy, protected reserve with garibaldi, sea lions and summer leopard sharks. The rest of the…
Kelp, orange garibaldi and a no-take marine reserve sit beside a sea lion colony, which makes La Jolla Southern California's snorkel destination. In…
Swim through a kelp forest, with bright orange garibaldi following you down the stairs and sea lions barreling past in the shallows. Catalina is the…
Take a staircase down to a chain of small rocky coves, where kelp and no-take protected water fill a few miles of coast. Garibaldi, sheephead and…
Float over kelp forests, with orange garibaldi below and sea lions in the shallows, then step back onto an island with no cars, shops or hotels.…
Real snorkeling lives on Los Angeles' rocky points, just not the tropical kind. Leo Carrillo, Point Dume and Palos Verdes hold kelp, garibaldi and…
Full guideA small pocket beach with an easy swim to kelp and bright garibaldi, and a sea lion colony on the rocks next door.
Full guideAbout one square mile of no-take water, stretching from the Cove past the sea caves to La Jolla Shores.
Shore entries with easy parking and calm water on a normal day. Still check the surf and ask the lifeguard.
Take the stairs into a no-take kelp park below the Casino, where garibaldi, sheephead and bat rays wait. The best all-round Catalina snorkel.
Quiet west end, sandy entry. Rent gear at the pier and swim to the reef right of the beach for clearer water, fewer crowds.
A calm, sandy entry and the best place to see leopard sharks, off the Marine Room end of the beach.
A small pocket beach with an easy swim to kelp and bright garibaldi, and a sea lion colony on the rocks next door.
A sheltered rocky cove inside the Laguna Beach SMR, down a staircase from Fairview Street. A good first stop, with top tide pooling.
Reefs, kelp and plenty of fish in a sheltered cove on Cliff Drive. A 50-step staircase leads down; about eight metered spaces sit at the top.
Kelp and tide pools at Sequit Point, entered near lifeguard tower 2. Expect reef, sea caves and big octopuses, plus cold water and surge.
A rocky San Pedro shore with a lot by the water. Enter by the jetty at mid to high tide, and watch for surge and slick rocks.
Calm Choppy Rough. Wave heights are offshore model values.
Forecast: Open-Meteo. Model data, not a lifeguard report. Always check posted warnings.
by Catalina Tours
About an hour in the water in the Casino Point marine protected area, with mask, snorkel, fins and wetsuit included. Ages 8 and up, swimmers only.
Guided inside a no-take MPA with an orientation before entry.
by Catalina Divers Supply
Divemaster-led shore snorkel at Casino Point, daily at 12 pm and 2 pm, with full gear and wetsuit included. Ages 8 and up.
The shop reports underwater cleanups and PADI AWARE conservation work.
by Channel Islands Adventure Company
Guided swim through the kelp forest off the beach. A 3-piece 7 mm wetsuit is included. Minimum age 10, swimming and prior snorkeling experience required. Offered Sundays, mid-June through September 30. Ferry adds $72 adult or $52 child.
The park's authorized concession for Scorpion Anchorage, guiding inside a no-take marine reserve.
by Bike and Kayak Tours
A guided intro snorkel in the Ecological Reserve with snorkel gear included. Listed for ages 12 and up, and you must swim without a flotation device. A 17.5 percent service fee applies.
Guided entry teaches you to keep your distance from the sharks and keep off the bottom. Ask about wetsuit sizing, since the listing does not say it is included.
by Bike and Kayak Tours
Paddle along the cliffs to the sea caves, then snorkel in the Ecological Reserve. Seasonal, so confirm dates before you book.
Staying in a guided group keeps kayaks well off the sea lion rocks. The listing says to call for current snorkel conditions before you buy.
We may earn a commission when you book through these links, at no extra cost to you. It never changes which tours we pick. How we choose tours.
July to October is the best window in Southern California, with the warmest water and, in early fall, often the best visibility. Winter is cold and rougher but doable in a thick suit.
Morning, before wind builds and boat traffic starts. Visibility drops quickly after swell or heavy rain.
Avoid big swell days, posted surf advisories and the 2 or 3 days after heavy rain, when runoff clouds the water. Santa Ana winds can affect the Channel Islands from October to January.
| Row | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snorkel conditions | Fair | Fair | Fair | Fair | Good | Good | Best | Best | Best | Best | Good | Fair |
| Leopard shark | Avoid | Avoid | Avoid | Avoid | Fair | Good | Best | Best | Best | Good | Fair | Avoid |
| California sea lion | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good |
| Garibaldi | Good | Good | Good | Good | Good | Best | Best | Best | Best | Best | Good | Good |
| Water °F | 61 | 60 | 62 | 64 | 66 | 68 | 71 | 73 | 71 | 68 | 65 | 62 |
The best-known sites are La Jolla Cove and La Jolla Shores in San Diego, and Casino Point and Lover's Cove on Catalina Island. Channel Islands National Park, reached by boat, is also excellent, with Anacapa, Santa Barbara and eastern Santa Cruz Island recommended by the park for snorkelers. Each place is a kelp-and-fish experience rather than coral. Mainland standouts include Shaw's Cove in Laguna Beach, praised for beginner-friendly kelp and garibaldi.
Southern California has the warmest water and most protected sites in the state. San Diego and La Jolla offer sea lions, garibaldi and summer leopard sharks. Orange County has coves such as Shaw's Cove in Laguna Beach and Little Corona del Mar. Catalina Island adds clearer, offshore kelp. Expect about 59 to 65 F in winter and 70 to 75 F in summer at Catalina, and plan on a wetsuit at all times.
Be realistic: Los Angeles proper has no reef like La Jolla or Catalina, and visibility on the open coast is often poor. Locals head to Catalina Island by ferry from Long Beach or San Pedro, or look at cold kelp coves such as Leo Carrillo State Beach in Malibu, a marine protected area. Abalone Cove on the Palos Verdes Peninsula sits in a state marine conservation area, but it is known for tide pools, and we could not confirm good snorkeling there, so check conditions with local rangers before going.
Most tours are guided shore snorkels or boat trips. On Catalina, guides lead shore snorkels at Casino Point, gear and wetsuit included. In San Diego, guided La Jolla trips visit the sea lions and leopard sharks. For Channel Islands, the park's concessionaire runs guided snorkel trips at Scorpion Anchorage. Pick operators that brief you on wildlife distances, provide wetsuits and keep groups small.
Giant kelp grows in cold, nutrient-rich water and shelters garibaldi, sheephead, opaleye and sea lions. Swim above the kelp and do not grab the fronds. Cold is the real limit, so choose your suit by season. Dive-shop guides suggest roughly 5 mm for much of the year, 7 mm with hood and gloves in winter, and a thinner suit on warm late-summer days. Sources vary, so rent from a local shop that knows the day's water temperature.
California protects its best snorkel sites as marine protected areas, and federal rules protect the marine mammals you will meet.
Most top sites, including Casino Point and Lover's Cove on Catalina, are State Marine Conservation Areas. It is illegal to take or possess any marine life there. Check the CDFW map for each site. Official rule
NOAA West Coast guidance says stay at least 50 yards from seals and sea lions. Never approach them on rocks, docks or beaches, and leave if they act disturbed. Official rule
Giant sea bass may not be taken anywhere in California. Look but do not touch or chase. Official rule
There are no lifeguards. Use a buddy, tell someone ashore your plan and avoid surf landings. Divers must show a dive flag. Official rule
How snorkelers protect reefs · Choosing a reef-safe sunscreen
These local groups restore coral, rescue wildlife and keep the water clean. Volunteer a morning, donate, or just follow their work.
Island land protection and giant sea bass outreach on Catalina
Stewards most of Catalina Island and runs public education, including talks on giant sea bass recovery. Its land protection helps keep the water along the island's coast healthy.
Visit catalinaconservancy.org →Federal protection of 1,470 square miles of ocean around the northern islands
NOAA manages the sanctuary around Anacapa, Santa Cruz, Santa Rosa, San Miguel and Santa Barbara. Its site covers regulations and ways to plan a visit.
Visit channelislands.noaa.gov →Protecting San Diego waterways and coastal water quality
A San Diego nonprofit that works on water quality and coastal protection. Visitors can help by keeping beaches clean and reporting illegal discharges.
Visit sdcoastkeeper.org →Tide pool education and marine protection in Laguna Beach
A local nonprofit that teaches tide pool etiquette and ocean stewardship in Laguna Beach. Read its tidepool guide before low tide visits and follow its look-don't-touch advice.
Visit lagunaoceanfoundation.org →
Yes, if you like kelp forests and sea life over coral. La Jolla Cove, Catalina's Casino Point and the Channel Islands are the standouts, with garibaldi, sea lions and sometimes leopard sharks. Water is cold, so wear a wetsuit.
July to October. Southern California water is warmest in late summer, and early fall is often the clearest. Winter is cold and can be rough, but works in a thick wetsuit. Skip days of big swell or recent heavy rain.
Almost always. Catalina runs about 59 to 65 F in winter and 70 to 75 F in summer, and Channel Islands National Park quotes 55 to 70 F. Guides suggest about 5 mm for most of the year and a thicker suit with hood in winter.
The best option is Catalina Island by ferry from Long Beach or San Pedro. On the mainland, Leo Carrillo in Malibu is a marine protected area with kelp. Visibility along the open coast varies a lot, so check conditions first.
Sea lions are common at La Jolla, Catalina and the Channel Islands, but NOAA asks you to keep 50 yards away. Harmless leopard sharks gather off La Jolla Shores in late summer. Never touch or chase any animal.
Yes. On Catalina, guided shore snorkels at Casino Point include gear and a wetsuit. Boat trips run from Avalon, and Channel Islands National Park has a guided excursion at Scorpion Anchorage. La Jolla also has guided tours.
What we pack for every snorkel trip. Each link searches the category on Amazon so you can compare brands and prices.
Non-nano zinc oxide only. No oxybenzone or octinoxate, which Hawaii bans.
Shop on Amazon →The best sun protection is fabric. Less sunscreen in the water, less sunburn on your back.
Shop on Amazon →Southern California water runs 58 to 72°F. A 5/4 mm suit in spring, 3 mm in late summer.
Shop on Amazon →An inflatable vest lets you rest without standing on the reef. Lifeguards love them.
Shop on Amazon →As an Amazon Associate we earn from qualifying purchases. Disclosure.
We check fees, rules and access against official sources first, then local operators and recent visitor reports. Conditions change, so always follow posted signs and lifeguards. Spotted something out of date? Tell us.
