The arrival of a baby swell shark at an aquarium in Louisiana has caused a wave of excitement, after the egg hatched despite ...

In one of the longest known cases, scientists discovered in 2015 that a female brownbanded bamboo shark at a San Francisco aquarium had stored sperm for at least 45 months — it gave birth nearly ...

Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two ...

However, because the female and male sharks have been without contact for more than a decade, this seems unlikely, Barrick said. The current record for delayed fertilization is held by a bamboo shark ...