Isla Santa Catalina island is famous for the 12-foot "wavy" barrel cactus and other desert plants that grow along the canyon, where an early morning walk is an enjoyable option. Bird life is abundant and you should see and hear cardinals, Gila woodpeckers, ravens, and verdin. Also famous are the rare endemic Santa Catalina rattle less rattlesnake and the abundant emerald- tailed lizards. There will be snorkeling opportunities at this island as well, where the shallow reefs are home to many species of fish, sea stars, sea fans, and more marine life.