But after spotting what she thought was another whale, Hauser realised it was a tiger shark. And it was swimming straight ...

There are over 530 shark species in the world, including 20 off the Florida coast, according to Gavin Naylor, director of the ...

"It was so much bigger than what you would expect," Kori Garza said. Earth's oceans are full of big surprises -- something Kori Garza knows better than most. The marine biologist has been on thousands ...