Male great whites reach maturity at 3.5–4.0 m (11.5–13.1 ft) long and females at 4.5–5.0 m (14.8–16.4 ft) long. Adults on average are 4–5.2 m (13–17 ft) long and have a mass of 680–1,100 kg (1,500–2,430 lb). Females are generally larger than males. The great white shark can reach 6.4 m (21 ft) in length and 3,324 kg (7,328 lb) in weight. The maximum size is subject to debate because some reports are rough estimations or speculations performed under questionable circumstances. Among living cartilaginous fish, only the basking and whale sharks and the manta ray average larger and heavier. These three species are generally docile in disposition and given to passively filter-feeding on very small organisms