Miss Helen, a 16-inch-long horn shark in the San Antonio Aquarium in Texas, lives in a tank where visitors are encouraged to touch the animals. Three people took the encouragement too far this ...

In the wild, swell sharks are native to the coastal waters of the eastern Pacific. They get their name from their ability to swell their bodies up with either air or water, a trick which they use ...

The female epaulette shark was never housed with a male shark but produced a fertile egg, apparently via a process known as parthenogenesis.