Tawny nurse shark  (Nebrius ferrugineus)

The most remarkable feature of the tawny nurse shark is probably its curious ability to change colour between grey and sandy brown depending on the colour of its surroundings (3). The tawny nurse shark is uniformly grey to tan-brown on its upper surfaces, paling slightly on the belly (2) (4). Juveniles can be distinguished from adults by the presence of small dark spots on the skin (4). This large shark has a broad, flattened head with a squarish snout and tiny eyes (3). There are two angular dorsal fins close to the tail, the pectoral fins curve backwards, and the long, narrow tail has a large upper lobe and almost no distinct lower lobe (4) (5).