Shark species are diverse and can be found in oceans around the world. There are over 500 species of sharks, ranging from the small dwarf lanternshark, which is about 8 inches long, to the massive whale shark, which can grow up to 40 feet. Sharks are classified into different groups, including the well-known great white shark, tiger shark, and hammerhead shark, each with unique characteristics and habitats. Sharks play a crucial role in marine ecosystems as apex predators, helping to maintain the balance of ocean life. They primarily feed on fish, seals, and other marine animals, and their presence indicates a healthy ocean environment. Conservation efforts are essential to protect various shark species from overfishing and habitat loss.