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.
Largest Swimmers: The whale shark is the largest fish in the sea. One was measured at 41 feet in length and weighed over 35 tons. This (Watch this video of divers swimming near a whale shark.) However, the blue whale (a mammal) is the largest living creature. Adult blue whales can reach 100 feet in length and 200 tons in weight.