The Sea of Cortez, Mexico, called the 'World's Aquarium' (by Jacques Cousteau), is a must for all diving enthusiasts. As a visitor to this underwater paradise, you can expect to see some of the most impressive marine animals in the world: Hammerhead Sharks, Whale Sharks, Blue, Grey, and Orca Whales, Dolphins and Giant Pacific Manta Rays, to name but a few. Dotted with underwater mountains and canyons, the Sea of Cortez circulates huge amounts of nutrient rich water, producing heavy plankton blooms that attract in turn a massive diversity of tropical and pelagic fish to these waters.