Fastest The fastest swimming sharks are the mako sharks and blue sharks, which can even leap out of the water. They are also probably the fastest fish. There hasn't been enough observation of their speeds to have an definitive answer. The whale shark has the biggest mouth among sharks. Recently, pregnant females have been found containing hundreds of pups.
Whale sharks are viviparous, giving birth to live young.
This is over 1.5 miles. Largest Litter One Blue shark was found with 135 pups in her uterus.