Ever wonder why sharks have so many differently shaped teeth or why they keep regrowing throughout their lives? Dr. David ...

The spotted estuary smoothhound, or “rig shark”, a modest little shark with mosaic teeth and a fondness for crustaceans, ...

Measuring in at 56 centimeters (22 inches) in length, the organism is actually a fetus, extracted from the womb of a pregnant dusky shark, caught by fisherman Enrique Lucero León near Cerralvo Island ...

Don’t get stuck with an unsafe boat needing costly repairs. Insure your 2011 Dusky Marine 19 BAY SHARK for just $100/year*. More freedom: You’re covered on all lakes, rivers and oceans within 75 miles ...

Their skin is covered with denticles, tooth-like scales that differ from ... measured 132 pounds of force between the jaws of a dusky shark (Carcharhinus obscurus). Largest egg in the world ...

blacktip shark and ragged-tooth shark sightings increased; tiger shark sightings were stable, and bull shark and dusky shark sightings decreased. In some cases, these changes are likely to reflect ...