Guided Snorkel Adventure to the La Jolla Sea Caves. In addition to the beautiful sea caves a close up encounter with California Sea Lions or Harbor Seals is almost always assured. This guided tour for all persons at least 13 years of age and weighing 100 lbs or more includes: Mask, Snorkel, Fins, Wet Suite and Guide. Not recommended for children 12 years or younger. ABSOLUTELY MUST KNOW HOW TO SWIM. If the participant weighs under 100 pounds they must provide their own full body wet suit. Call (619) 260-1880 for groups larger than 16.