This resort island features hotels, a movie theater, and an Art Deco cultural center. Just down some stairs from the Catalina Casino is a protected snorkeling area with access to a medley of colorful creatures, including Garibaldi, leopard sharks, rockfish, and bat rays. You can also fish, take an underwater sub expedition to explore Lovers Cove Marine Preserve, motor along the surface on a sea life safari, gaze through a window on a glass bottom boat trip, embark on a flying fish voyage, or scuba dive in 90 feet of water. While snorkeling is inexpensive compared to scuba, round-trip ferries can cost $60 to $76 per person. divingcatalina.com