Board the SS Nautilus at Avalon’s Green Pleasure Pier and descend six feet below the surface without getting wet. This 45-minute semi-submarine tour cruises to Lovers’ Cove marine preserve for face‑to‑face views of kelp forests, Garibaldi, and harbor panoramas.
Board the SS Nautilus at Avalon’s Green Pleasure Pier and descend six feet below the surface without getting wet. This 45-minute semi-submarine tour cruises to Lovers’ Cove marine preserve for face‑to‑face views of kelp forests, Garibaldi, and harbor panoramas.
You step off Avalon’s Green Pleasure Pier and the harbor air pulls you forward—salty, bright, the hum of a small town and the distant slap of waves. The SS Nautilus waits: a low-profile, yellow-hulled semi-submersible with viewing portholes set six feet below the waterline. On the top deck, the captain points the bow toward Lovers’ Cove and the boat slips into a landscape where the sea itself reaches up, pressing kelp forests and rock gardens against the glass.
Verified experiences and guided adventures in the surrounding area.
Operated by Catalina Adventure Tours · Avalon, California
You step off Avalon’s Green Pleasure Pier and the harbor air pulls you forward—salty, bright, the hum of a small town and the distant slap of waves. The SS Nautilus waits: a low-profile, yellow-hulled semi-submersible with viewing portholes set six feet below the waterline. On the top deck, the captain points the bow toward Lovers’ Cove and the boat slips into a landscape where the sea itself reaches up, pressing kelp forests and rock gardens against the glass.
Catalina sits on the southern fringe of the Channel Islands, a mixture of uplifted marine rocks and volcanic outcrops carved by millennia of wave action. The island’s human story runs from Tongva (Gabrielino) stewardship to 20th-century development under William Wrigley Jr., whose investments shaped Avalon’s promenade and visitor culture. Today the waters around Lovers’ Cove are a marine protected area—cold currents bring nutrient-rich flows that feed Garibaldi, kelp bass, and vibrant invertebrates.
Practical guidance is simple and essential: the voyage is a fixed 45 minutes, departs from the Green Pier, and requires you to check in 15 minutes early. Expect easy physical demand but limited accessibility—the vessel’s lower viewing area has steps and uneven surfaces. Bring sun protection and a jacket: the top deck is exposed, while the undersea portholes are cool and dim. If you’re prone to motion sickness, take preventive medication; visibility varies with swell and plankton, so mid-morning departures often give the clearest views. Photo opportunities include the top-deck approach to Avalon Harbor and, through the glass, close-up views of territorial Garibaldi and swaying kelp—nature that doesn’t wait, it nudges you to look closer.
Yes. Transportation to the island is not included—book the Catalina Express or another ferry in advance and plan time to get from the dock to the Green Pier.
Children are allowed but infants (under 2) must sit on an adult’s lap; all children should be supervised and the lower cabin has steps and limited space.
Some tours offer fish-feeding via torpedo dispensers for an extra charge—ask at booking or at the pier for availability and rules.
No. The lower viewing cabin has steps and uneven surfaces; this tour is not recommended for guests with significant mobility impairments.
Catalina Adventure Tours operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




You step off Avalon’s Green Pleasure Pier and the harbor air pulls you forward—salty, bright, the hum of a small town and the distant slap of waves. The SS Nautilus waits: a low-profile, yellow-hulled semi-submersible with viewing portholes set six feet below the waterline. On the top deck, the captain points the bow toward Lovers’ Cove and the boat slips into a landscape where the sea itself reaches up, pressing kelp forests and rock gardens against the glass.
You step off Avalon’s Green Pleasure Pier and the harbor air pulls you forward—salty, bright, the hum of a small town and the distant slap of waves. The SS Nautilus waits: a low-profile, yellow-hulled semi-submersible with viewing portholes set six feet below the waterline. On the top deck, the captain points the bow toward Lovers’ Cove and the boat slips into a landscape where the sea itself reaches up, pressing kelp forests and rock gardens against the glass.
Catalina sits on the southern fringe of the Channel Islands, a mixture of uplifted marine rocks and volcanic outcrops carved by millennia of wave action. The island’s human story runs from Tongva (Gabrielino) stewardship to 20th-century development under William Wrigley Jr., whose investments shaped Avalon’s promenade and visitor culture. Today the waters around Lovers’ Cove are a marine protected area—cold currents bring nutrient-rich flows that feed Garibaldi, kelp bass, and vibrant invertebrates.
Practical guidance is simple and essential: the voyage is a fixed 45 minutes, departs from the Green Pier, and requires you to check in 15 minutes early. Expect easy physical demand but limited accessibility—the vessel’s lower viewing area has steps and uneven surfaces. Bring sun protection and a jacket: the top deck is exposed, while the undersea portholes are cool and dim. If you’re prone to motion sickness, take preventive medication; visibility varies with swell and plankton, so mid-morning departures often give the clearest views. Photo opportunities include the top-deck approach to Avalon Harbor and, through the glass, close-up views of territorial Garibaldi and swaying kelp—nature that doesn’t wait, it nudges you to look closer.