The Collaborative International Dictionary of English v.0.48:

Great White shark \Great White shark\
   a large shark (Carcharodon carcharias, class Chondrichtyes)
   usually found in warm seas. When young it is bluish but it
   becomes white with age. It grows to over 15 feet in length
   and is feared as a man-eater. Also called white shark and
   great white.
   [PJC]

WordNet (r) 3.0 (2006):

great white shark
    n 1: large aggressive shark widespread in warm seas; known to
         attack humans [syn: great white shark, white shark,
         man-eater, man-eating shark, Carcharodon carcharias]