A small shark swimming around a Louisiana aquarium holds a mystery in its DNA. Yoko the swell shark hatched from an egg that was discovered in a puzzling place — an all-female tank, the Shreveport Aquarium announced. “It really proves that life ... uh ... finds a way,” curator Greg Barrick said in a Jan. 24 news release.

According to the aquarium, the shark egg was first spotted eight months ago. The shark hatched a few weeks ago and the team at the aquarium is working to determine how it was conceived. Once the shark is big enough for a blood draw,

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