12 Best Shore Excursions to Catalina Island: Snorkeling, Diving & Beach Time

Here’s a secret that most cruise passengers miss: Catalina Island isn’t just a quick stopover – it’s a gateway to some of the most spectacular underwater adventures on the California coast. After countless visits to this charming island, I’ve discovered that the real magic happens when you venture beyond the obvious tourist spots.

Santa Catalina Island sits just 22 miles off the Southern California coast, and here’s something that’ll blow your mind: it’s home to the healthiest kelp forests in California. The island’s protected marine sanctuary status means you’re diving into waters that have been carefully preserved for decades. Trust me, your underwater photos will make your friends back home seriously jealous.

Top Water Adventures That’ll Make Your Cruise Unforgettable

1. Lover’s Cove Marine Preserve Snorkeling

This protected cove is perfect for beginners, but don’t let that fool you into thinking it’s boring. The water here is typically 10-15 degrees warmer than the surrounding ocean thanks to its sheltered position. I’ve seen more Garibaldi fish (California’s state marine fish) here than anywhere else. Pro tip: bring a waterproof GoPro – the bright orange Garibaldi against the kelp backdrop creates postcard-worthy shots.

2. Casino Point Dive Park

Here’s what most people don’t know: this is the only dive park on the West Coast, and it’s absolutely free to use. The underground terrain includes artificial reefs created from sunken ships and aircraft. The visibility can reach up to 100 feet on good days, making it a photographer’s paradise. Just remember to bring your own gear or rent from the nearby dive shop.

3. Descanso Beach Club Experience

This isn’t your typical beach day. Descanso Beach Club offers the only sandy beach in Avalon, but here’s the kicker – it’s artificially created and meticulously maintained. The beach club provides everything from kayak rentals to beachside massages. The water here is protected from strong currents, making it ideal for families with kids.

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4. Kelp Forest Diving Adventure

The kelp forests around Catalina are like underwater cathedrals. These giant kelp plants can grow up to 18 inches per day, creating a constantly changing underwater landscape. The best diving spots are typically on the backside of the island, where the kelp is thickest. You’ll encounter sea lions, moray eels, and if you’re lucky, the occasional angel shark.

5. Glass Bottom Boat Tour

Don’t roll your eyes at this one! The glass bottom boats here use advanced optical technology that provides crystal-clear views of the underwater world. It’s perfect for non-swimmers or those who want to stay dry while still experiencing the marine life. The boats visit sites that are off-limits to divers, including sensitive coral areas.

6. Snuba Diving at Avalon Underwater Park

This is the perfect compromise between snorkeling and scuba diving. You’re connected to an air supply on the surface but can dive down to 20 feet. No certification required, but you get that full underwater experience. The guides here know every nook and cranny of the underwater park and can point out creatures you’d never spot on your own.

Hidden Gems and Insider Secrets

7. Hamilton Cove Beach

Most cruise passengers never make it to this secluded spot, which is exactly why you should. It’s a bit of a hike from town, but the reward is a pristine beach with some of the best snorkeling on the island. The rocky areas harbor octopi and colorful nudibranchs. Local tip: the best time to visit is early morning when the water is calmest.

8. Catalina Express Underwater Sea Walker

This is space-age diving without the need for certification. You wear a helmet connected to surface air supply and literally walk on the ocean floor. The experience lasts about 30 minutes, and you’ll be surrounded by curious fish. It’s surprisingly peaceful and offers incredible photo opportunities.

Similar to the amazing experiences you’ll find at Amber Cove, Catalina offers diverse water activities that cater to all skill levels.

9. Kayak and Snorkel Combo Tour

This excursion takes you to secluded coves that are only accessible by kayak. You’ll paddle through kelp forests and stop at multiple snorkeling spots. The guides are typically marine biology students who can provide fascinating insights about the ecosystem. Don’t worry about experience – the waters around Catalina are generally calm and perfect for beginners.

10. Sunset Beach Volleyball and Swimming

South Beach (locals call it “Pebbly Beach”) transforms into a magical spot during late afternoon. The beach volleyball courts are free to use, and the swimming here is excellent due to the protected cove. As the sun sets, you’ll understand why this spot is beloved by locals but often missed by tourists.

Adventure Beyond the Ordinary

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11. Night Diving with Bioluminescence

Here’s something special: certain times of year, the waters around Catalina light up with bioluminescent plankton. Night diving during these periods is absolutely magical – every movement creates trails of blue light. This isn’t widely advertised, so ask local dive shops about current conditions. The experience is otherworldly and rarely available at other cruise destinations.

12. Stand-Up Paddleboard Yoga at Avalon Bay

This might sound gimmicky, but it’s actually incredibly relaxing and provides a unique perspective of the island. The instructors are experienced in both yoga and marine safety. Even if you fall off (and you might!), the water in Avalon Bay is typically warm and calm. It’s a great way to end a day of more strenuous activities.

“The snorkeling at Catalina was absolutely incredible! I saw more colorful fish in one hour than I expected to see all day. The water was so clear, and the Garibaldi fish were everywhere. Definitely the highlight of our Royal Caribbean cruise!” – Passenger on Radiance of the Seas

Essential Gear for Your Catalina Adventure

Getting the right equipment can make or break your underwater experience. Here’s what I recommend bringing:

• Water Protection: A waterproof dry bag is essential for protecting your valuables while you’re in the water
• Sun Protection: Quality reef-safe sunscreen – regular sunscreen can damage the marine ecosystem
• Comfort Items: Water shoes for rocky areas and a quality hat for sun protection
• Documentation: Underwater camera or waterproof phone case for capturing memories

Practical Tips for Success

Timing is everything at Catalina. The best water conditions are typically in the morning before the afternoon winds pick up. Most cruise ships arrive early, so you’ll want to hit the water activities first and save land-based exploration for later.

Don’t forget about the island’s unique weather patterns. The marine layer can roll in quickly, dropping temperatures by 20 degrees. Always bring layers, even if it appears sunny when you disembark. I’ve seen too many passengers shivering in their swimwear when the fog rolls in.

For gear rental, book in advance when possible. The island has limited equipment, and popular items like wetsuits and underwater cameras rent out quickly during peak cruise season. Many shops offer package deals that include multiple activities.

Water Conditions and Safety

Unlike the bustling beaches at Punta Cana, Catalina’s waters offer a more intimate marine experience with excellent visibility and diverse wildlife.

However, the marine life diversity more than makes up for these challenges. You’ll encounter species found nowhere else on typical cruise itineraries, including the famous flying fish that Catalina is known for. The island’s conservation efforts mean the underwater ecosystem is thriving in ways that many other destinations simply can’t match.

Check the Public Holidays for California as they may affect operating hours and availability of certain excursions.

Bonus Tips That’ll Make You Look Like a Pro

• The Catalina Island Conservancy offers free nature walks that most cruise passengers miss – these provide excellent context for the underwater ecosystems you’ll be exploring
• Local dive shops often have “drift dive” options where you can experience the island’s famous kelp highways – underwater currents that carry you through the forest
• The island’s casino (which isn’t actually a gambling facility) has a small museum with fascinating exhibits about the island’s marine life
• Many restaurants in Avalon will cook your catch if you go spearfishing – just ask about local regulations first
• The harbor seals at Seal Point are most active during feeding time around 11 AM and 3 PM

For comparison, you might also enjoy exploring Saona Island in the Dominican Republic, which offers a completely different Caribbean underwater experience.

Common Questions

Do I need to be certified to enjoy the underwater activities?
Not at all! Many of the best experiences, including snuba diving, sea walking, and snorkeling, require no certification. Only traditional scuba diving requires certification.

How cold is the water, and do I need a wetsuit?
Water temperatures range from 60-70°F year-round. A wetsuit is highly recommended for comfort, especially for extended time in the water. Most rental shops include wetsuits with their snorkeling gear.

Can I bring my own snorkeling gear on the cruise ship?
Absolutely! Most cruise lines allow snorkeling gear in your luggage. Just make sure masks and snorkels are thoroughly cleaned and dried to prevent any customs issues.

Are there age restrictions for the water activities?
Most activities welcome children, but minimum ages vary. Snuba diving typically requires participants to be at least 8 years old, while regular snorkeling has no age limit with proper supervision.

What happens if weather conditions are poor?
Catalina’s protected harbors mean most activities can continue in mild weather. However, if conditions are truly rough, most operators offer alternative activities or full refunds.

The beauty of Catalina lies not just in its pristine waters or abundant marine life, but in its ability to transform a simple day at sea into an underwater adventure that stays with you long after you’ve returned to dry land. Every dive, every snorkel, every moment spent in these protected waters connects you to something larger than yourself – a thriving ecosystem that exists because people chose to protect it. So when your cruise ship pulls into Avalon Harbor, remember: you’re not just visiting an island, you’re entering a living laboratory where every splash holds the possibility of discovery.