Aquarium surprised by shark born in a tank without males

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Aquarium surprised by shark born in a tank without males
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Laura is a science news writer, covering a wide variety of subjects, but she is particularly fascinated by all things aquatic, paleontology, nanotechnology, and exploring how science influences daily life. Laura is a proud former resident of the New Jersey shore, a competitive swimmer, and a fierce defender of the Oxford comma.

ArticleBody:The Shreveport Aquarium in Louisiana kicked off 2025 with a mysterious birth. A swell shark pup hatched at the facility on January 3, yet the two female sharks present in the tank have not been in contact with a male in over three years. The team at the aquarium suspects the birth could be delayed fertilization or a rare reproductive phenomenon called parthenogenesis.

“This situation is incredible and shows the resilience of this species,” Greg Barrick, the Curator of Live Animals at Shreveport Aquarium, said in a statement. “We are very excited in the coming months to confirm whether this was indeed a case of parthenogenesis or if it was delayed fertilization.” In the wild, swell sharks are found in coastal waters of the eastern Pacific Ocean. They have spots along their scales and can grow up to three feet long.

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