The goal of laser eye surgery is to change the shape the cornea so it does a better job of focusing images onto the retina for sharper vision. LASIK and PRK are two types of laser vision correction.
2. Bottlenose Dolphins. The cetacean family, consisting of dolphins and whales are considered the smartest animals inhabiting the ocean. The Bottlenose Dolphin lives in warm waters throughout the world and is the smartest species of dolphin. It has an extremely large brain and its cerebral cortex and frontal lobe are 40% bigger then a human.
Fishes adapted to both salt and fresh water, including salmon, eels and bull sharks are unusual. Of the marine fishes, the greatest variety and volume live close to land in waters above the continental shelves that rim continents. The greatest density of species are found associated with coral reefs.