The tiger shark is one of the largest known sharks, commonly reaching a length of 3.25-4.25 metres (11-14 feet), and weighing around 385-635 kg (850-1400 pounds). New born tiger sharks range in lengths between 51 to 76 cm (2 to 2.5 feet). Males reach maturity at 2.3-3 metres (8-10 feet), while females become mature at 2.5-3.3 metres (8-11 feet). The largest specimens are believed to reach lengths of up to 5.5 metres (18 feet), and weigh over 900 kg (2000 pounds).