A shark's tail is asymmetrical, with the upper lobe bigger. This gives the shark, which is heavier than water, lift while swimming. While bony fish spawn, sharks copulate. Embryos of white sharks feed on unfertilised eggs produced by the female during pregnancy, and there is no placental connection with the mother. There can be between five to ten pups which are 1.2 to 1.5 metres long at birth and can weigh up to 32 kg.
White sharks are warm-bodied.
They elevate their body temperature using a heat exchange system that retains the heat generated by their muscles. This has helped the white shark to become dominant predators of swift-moving prey like seals in cold environments. The white shark is seldom seen before it attacks. To be successful in hunting its quick and agile prey like seals or dolphins, the shark charges from below and beyond the circle of vision with the intention of immobilising its victim with a massive first strike. This is usually done when the prey needs to surface to breathe, as this is when it is most vulnerable.