An aquarium is trying to figure out how it gained a new baby shark in one of its tanks where only two females were present. The swell shark, affectionately named Yoko after the Chumash word for shark ...

The pup hatched in a tank housing two female sharks who hadn't been around any male sharks in over three years.

Last February, a similar situation occurred in Hendersonville, North Carolina, when a stingray at the Aquarium & Shark Lab ...