However, it turns out that a unique shark species, the bull shark, tends to swim outside the box—and right into the freshwater of the Mississippi River. Could bull sharks really swim that far ...

Here’s a look at the most aggressive shark species that pose a threat ... capable of living in both saltwater and freshwater. With 121 attacks, including 26 fatalities, it ranks among the ...

Freshwater shark: Alone among the sharks ... These are the only two specimens ever found of this new species, whose gaping mouth inspired the name "megamouth." Lowest note a shark can hear ...

Clicklike noises made by a small species of shark represent the first instance of a shark actively producing sound ...

Explore the complex issue of catch-and-release sharks and why stronger measures are needed to protect threatened species worldwide.

large sharks for fins, sawfish because of rostrum, which is used as souvenirs, freshwater rays for aquariums around the world, and so on. In the CITES lists (Convention on International Trade in ...

A study has found that around 24% of more than 23,000 freshwater animal species are threatened with extinction 1, because of pollution, dams, agriculture and the invasion of other species.

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