Sharks have already inhabited the oceans for about 420 million years, 200 million years before dinosaurs even existed. With their refined senses of smell, hearing and sight as well as cartilage skeletons rather than bones, sharks are able to detect and locate their prey from miles away and move at terrific speeds through the water, making them the top predators in the oceans. However, probably because of the impression left by some movies, people always associate sharks with a great white shark emerging abruptly from the water’s surface to attack people with its gaping jaws. In fact, most of the sharks are docile. They seldom attack humans. Contrarily, many species of sharks are in serious danger due to human activities. Connect to the MMIS to find out more.