Climb aboard our semi-submersible that has large square windows, and plenty of headroom for guests to comfortably sit and enjoy the undersea life pass by. You may see giant sea kelp, colorful fish, and very possibly sea lions, seals, leopard sharks and more! This is a must see Catalina Island attraction that we have offered for over 20 years. We tour through the Catalina Island Lover's Cove Marine Preserve. The semi-sub also allows guests to walk about as space is available to maximize the viewing possibilities, and because this purpose built vessel has a large outer deck as well, guests can climb outside to enjoy the weather and harbor views as we embark on the return journey to Avalon harbor.