German Lt. Col. Marc Walther, Command and General Staff College exchange instructor at Fort Leavenworth, Kansas, cleans rock ...

A female swell shark gives birth to a pup without coming in contact with a male, and now scientists are wondering how this is even possible.

Staff at Louisiana's Shreveport Aquarium have been left stumped by the 'virgin birth' of a shark pup. Yoko, a swell shark pup, hatched on January 3 in an all-female tank that had not seen a male shark ...