Tui De Roy / Flightless Cormorant (Phalacrocorax harrisi) drying stunted wings at sunset, Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Pete Oxford / Flightless cormorant (Phalacrocorax / Nannopterum harrisi) drying its wings. Fernandina Is, Galapagos

Piotr Naskrecki / Vanzolini's Worm Lizard (Amphisbaena vanzolinii) legless without functional eyes live underground, Guyana

Flip de Nooyer / Hoatzin (Opisthocomus hoazin) close up of the vestigial claws on a chick's wing used for grasping, Guyana

Flip de Nooyer / Hoatzin (Opisthocomus hoazin) close up of the vestigial claws on a chick's wing used for grasping, Guyana

Yva Momatiuk & John Eastcott / Northern Fur Seal (Callorhinus ursinus) three long hind flipper with vestigious toenails, St Paul Island, Pribilof Islands, Alaska

Michael & Patricia Fogden / Giant Blind Snake (Typhlops schlegelii) head showing vestigial eyes, southern Africa

Michael & Patricia Fogden / Giant Blind Snake (Typhlops schlegelii) coiled on ground, southern Africa

Konrad Wothe / Flightless Cormorant (Phalacrocorax harrisi) drying its wings, Galapagos Islands, Ecuador