Baja California is a peninsula in the western section of Mexico. The peninsula has the Pacific Ocean to the west and is separated from the mainland by the Gulf of California (also known as the Sea of Cortez) to the east. These waters are home to 39 percent of the world's marine mammal species. Nine hundred species of fish and five of the world’s seven endangered species of sea turtles live here.
The main reason for diving Malpelo Island is the sharks. The area is known for large schools of hammerheads, silky sharks, Galapagos and whitetip sharks. In the winter there is a population of sand tigers, and in late summer and fall, whale sharks call these waters their home. Other large pelagics can also be viewed. Tuna, jacks and eagle rays are not uncommon, with the occasional manta ray making an appearance.