The roughskin dogfish, scientifically known as Centroscymnus owstonii, is not a freshwater species. This shark is primarily found in marine environments, specifically inhabiting deep waters over ...

Numerous shark species are capable of inflicting mortal ... thriving in both saltwater and freshwater environments. Their robust build, reaching lengths of 7 to 11.5 feet and weighing up to ...

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 ...

Nearly a quarter of the world's freshwater species are at risk of extinction due to a multitude of threats, according to new ...

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 ...

Freshwater environments cover about 1% of Earth's surface while accounting for more than 10% of known species. Like many ...

Researchers found that 24 percent of freshwater species––including dragonflies, fish, and crustaceans––are vulnerable, endangered, or critically endangered due to multiple environmental ...