A Sydney aquarium has captured incredible and rare footage of sharks courting by biting each other's fins. Mary-Lou and ...

Sand tiger sharks, also known as gray nurse sharks, have a deceivingly ferocious look. They are large-bodied and display a mouthful of sharp teeth that protrude in all directions, even when the ...

They’re also known as gray nurse sharks. Single Notch was one of two sand tiger sharks in her Norfolk Canyon exhibit, where she was a longtime resident, according to staff. Estimates on their ...