Marine birds are a diverse group of birds that inhabit the oceans and seas around the world. Terns are small, slender seabirds with long, pointed wings and forked tails. Petrels are medium-sized seabirds with long wings and tube-shaped nostrils on their beaks. Boobies are large, web-footed seabirds with long, pointed wings and short legs. Seagulls are large, white or gray seabirds with long wings and webbed feet. Ernes are large, black and white seabirds with long wings and a hooked bill. An ern is a smaller version of an ERNE. Gannets are large, white seabirds with long wings and a long, pointed bill.