First-ever footage of leopard shark sex shows an unexpected trio

"The males lost all their energy and lay immobile on the bottom while the female swam away actively." Breakthroughs, discoveries, and DIY tips sent every weekday. Marine biologists recently documented a promising (if intimate) marine moment in the ocean waters near northeast Australia. For the first time, researchers recorded a leopard shark () mating event. But the footage doesn't showcase a pair of the endangered predators going at it--the brief tryst involved three participants.