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.
Whale Shark. Photograph by Brian J. Skerry. The largest fish in the sea, the whale shark can reach lengths of 40 feet (12 meters) or more. The gentle giants are filter feeders, swimming with their wide mouths open to collect plankton and small fish.