Isla San Pedro Mártir (Mártir, for short) is located near the middle of the Gulf of California about 20 nautical miles (~23 land lubber miles or 37 km) south of Isla Tiburon. You're right. The middle of a deep gulf is a strange place to put an island. But there it is. Like most islands in the gulf, Mártir is not the lush and inviting tropical island of popular cinema. It is a desert island in the true sense of the word. About 2 kilometers long the seemingly barren island is surrounded by steep cliffs and few (safe) anchorages. Cardón cacti (Pachycereus pringlei) ) dominate the floral assemblage. Even over the roar of your motorboat engine you'll notice another sign of life; the cacophony of thousands of birds like the Blue-footed booby (Sula nebouxii) raised in chorus. That's assuming the gnats haven't found you first.