Diving birds are a group of avian species that hunt for food by plunging into water. They have specialized adaptations, such as streamlined bodies and webbed feet, which help them swim efficiently. Common examples include penguins, cormorants, and loons. These birds primarily feed on fish and other aquatic organisms. Many diving birds are excellent divers, capable of reaching significant depths. They use their keen eyesight to spot prey underwater and can hold their breath for extended periods. Some species, like the great blue heron, also employ a hunting technique called "still hunting," where they wait patiently for fish to come close.