The document summarizes information about 18 species of penguins and other seabirds like gulls, gannets, frigatebirds, and albatrosses. It discusses how penguins are expert swimmers and divers but cannot fly. It also provides details about the behaviors and habitats of gulls, gannets, frigatebirds, and albatrosses. The emperor penguin's favorite food is squid, gulls will scavenge discarded waste for food, and gannets plunge from heights into the water to catch fish and squid.