Pelecaniformes
This bird group contains 6 families of waterbirds, including anhingas and darters, cormorants, frigatebirds, pelicans, tropicbirds, and gannets and boobies . These groups are all found mainly on or near oceans. Members of some families in this group look very similar (anhingas and cormorants), while others look fairly different. Pelicans are especially strange looking, with their enlarged throat sacs and hooked bills. All members of this group hunt for fish and other aquatic prey by diving or swimming.