How Did an Aquarium Stingray Get Pregnant without a Mate
Briefly

In fact, shark-ray babies would be even more dramatic than that, says Demian Chapman, director of the shark and ray conservation program at Mote Marine Laboratory & Aquarium in Florida.
Quite a variety of species of shark and rays are known to reproduce like that in captivity, says Chapman, who studied the first known case of parthenogenesis in a hammerhead shark, which occurred in 2001.
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