Average size about 5 ft., maximum up to 6.5 ft. Size at birth between 1.5 and 2 ft. Pups show a fast growth rate. Males mature at about 4.5 ft, females mature at about 5 ft. Long, parabolic snout, with long upper furrows.
Nostrils are far apart.
Origin of first dorsal fin before or slightly before the free rear ends of the pectoral fins. Origin of second dorsal fin above midbase of anal fin or just in front of its insertion. Grey to grey-brown with white ventral surface. Tolerant to different salinities, and can be found in estuaries and river mouths. During winter months they migrate into deeper waters.