According to Discovery Communications, the biggest great white shark ever reported was 23 feet long. It was caught off the coast of Malta by Alfredo Cutajar in 1987, however there is still some debate as to if the measurement was accurate or not.
The Canadian Shark Research Center insists that the biggest, accurately measured great white shark was a 20-feet-long female caught by David McKendrick in the waters off of Prince Edward Island, Canada, in 1988. This length is in line with what most researchers agree is around the maximum size for great white sharks.
The average great white shark is between 13 and 16 feet long, and they typically weight between 1,500 to 2,450 pounds. With rows of saw-like teeth, they are dangerous hunters, whose speed and sharp senses help them to ambush and incapacitate their prey.