5. The Gulf Of California

Perhaps one of the most diverse marine ecosystems in the world, the Gulf of California is home to numerous species of sharks, reef fish, turtles and whales. The vaquita porpoise which is the smallest in the world can also be found in this gulf which stretches over 900 miles from the shores of San Diego to Guadalajara. The region also happens to be an important source of livelihood for Mexico where they haul such things as sardines, shrimps and even giant squids. Tuna as well as billfishes can also be harvested in this area, which is a major attraction among those into sport fishing.