What are the biggest great white sharks ever recorded? The great white shark (scientific name: Carcharodon carcharias) is not the biggest shark (that title goes to the whale shark), but they are the largest predatory fish on Earth. According to the Guinness World Records Book, full-grown adults are average 4.3-4.6 meters (14-15 feet) in length, and generally, weigh 520-770 kg (1,150-1,700 lb). But there are many (unconfirmed) claims of huge specimens up to 10 meters (33 feet) in length. Newspapers and home photo albums are full of unconfirmed huge great white tales. And although few have been properly authenticated, there is a lot of circumstantial evidence to suggest that the largest great white sharks grow to more than 6 meters (20 feet) in length.