With cactus-studded desert mountains plunging into tranquil turquoise bays, gliding manta rays and pods of migrating orca whales, this uninhabited island in the Sea of Cortez, which separates mainland Mexico and the fingerlike Baja peninsula, is every bit the paradise island you dream of escaping to. It's also the perfect place to explore by sea kayak; warm water and sunshine are almost guaranteed from October to May.