In an unusual turn of events, a baby swell shark named Yoko was born at the Shreveport Aquarium in Louisiana. The shark was born in a tank that had not seen a male shark for over three years.

Scan the ocean and look for a shark’s fin above the water. Check for notices from the lifeguards on duty. Play the “Baby Shark” song and see if one shows up. Relatively shallow, knee-deep water.

A Louisiana aquarium welcomed a baby shark born under mysterious conditions, the aquarium said Friday. The swell shark, nicknamed Yoko, hatched on Jan. 3, according to the Shreveport Aquarium.