Seabirds have several adaptations that allow them to thrive in aquatic environments. Their bodies are built for flying and diving to catch fish. They communicate through sounds and gestures. Many seabirds like pelicans and diving birds catch fish by diving underwater. Seabirds lay eggs from which hatch young. They fly to scan waters from above to spot prey. Common seabirds include herring gulls that live near various bodies of water. Seabirds are omnivorous and eat both fish and plant materials. Pelicans are the state bird of Louisiana. Seabirds live near seas, rivers, lakes and other water sources.