The life of a shark is one of constant, ceaseless movement. Sharks must keep swimming in order to be able to breathe, constantly moving in the water so that water flows over their gills, allowing them ...

"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 ...

A tiger shark with wanderlust has journeyed from the East Coast to just off the shore of Biloxi. On Aug. 29, while South Mississippi was recalling the destruction of Hurricane Katrina 20 years earlier ...

An isolated island now hosts some of the largest tiger sharks ever recorded. This video explains how unique food availability and long-term human activity may have reshaped an entire predator ...

Diving into an ocean is an invitation into a world of mystery. The deeper you go, the more complex this mystery becomes. There are colors of fringing corals. There are sounds, those hissings, whispers ...

A team at Project Hiu tag a tiger shark. Chelsea Black is on the boat, working with former shark fishermen from Indonesia to place a GPS tracker on the shark's dorsal fin. Chelsea Black is a shark ...

Long before modern great whites prowled the seas, a colossal shark cruised the warm shallows off northern Australia. Its story begins on a rocky shoreline near Darwin, where a few heavy disks of ...

Heart-stopping footage has captured the moment a tiger shark swam into ankle-deep water, coming face-to-face with an unsuspecting dog wading in the shallows. The clip shows the striped shark moving ...