(Cetorhinus maximus)
The basking shark (Cetorhinus maximus) is the second-largest living fish,after the whale shark,and one of three plankton-eating sharks along with the whale shark and megamouth shark.Adults typically reach 6–8 metres (20–26 feet) in length.They are usually greyish-brown,with mottled skin.The caudal fin has a strong lateral keel and a crescent shape.