In the west of Mexico, near the border with the United States and separated from the Pacific Ocean by the California peninsula, is the Sea of ​​Cortez, a true natural aquarium that seems to have been designed by nature for the practice of diving. Given the large number of microorganisms that generate these waters favored by the abundance of sunlight, we can find more than 890 species of fish, of which 90 are endemic to the area The Sea of ​​Cortez is home to about 40% of mammal species seamen that exist in the world and a third of the total of cetacean species.