13821212 - The mythical cow shark or “seven gills” (Notorhyncus cepedianus), the only existing example of the genus Notorhyncus of the Hexanchidae family, is easily recognized by the presence of 7 gill slits, typical of sharks of the ancient Mesozoic species.71112005 - Carp, mirror carp, carp pond, close-up eye and gills, Brandenburg, Germany70448055 - Clustered Pine Cone Bonnet mushrooms Mycena seynii growing by a fallen pinecone These mushrooms are the inedible fruiting bodies of this fungus and can reach 10 centimetres in height They have gills on the undersides of the bell-shaped caps from which r70058044 - Nembrotha megalocera, Endemic Sea slug, Egypt, Sha´ab Mahlai, Red Sea70424162 - Hawaii, School of yellowfin goatfish (Mulloidichthys vanicolensis).70209473 - Lemon Shark (Negaprion brevirostris). Ria of Vigo, Pontevedra province, Galicia, Spain70501834 - Visitors watch a scuba excursion in the shark tank at the Two Oceans Aquarium located in the Victoria and Alfred Waterfront in Cape Town, South Africa. Photo by Jonathan Kingston/Aurora
