Leopard Shark ‘Threesome’ Caught on Camera By Researcher
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In a rare and fascinating discovery, Australian researcher Dr. Hugo Lassauce captured footage of a ‘threesome’ mating event among endangered leopard sharks off the coast of New Caledonia. The remarkable moment, involving two male leopard sharks mating with a female shark, was detailed in Dr. Lassauce’s journal article published in the Journal of Ethology.

The University of the Sunshine Coast (UniSC) marine biologist and his research team were conducting a global project to aid in the repopulation efforts of the near-extinct leopard shark species in Southeast Asia. During their monitoring of the shark’s behaviors, they witnessed the unprecedented mating behaviour of the leopard sharks.

Dr. Lassauce recounted the extraordinary event where he observed the two male sharks engaging with the female shark as he snorkelled in the waters off the New Caledonia coast. The males, each measuring around 7.5 feet in length, were seen grasping the female’s pectoral fins while exhibiting mating behaviours rarely documented in the leopard shark species.
The research team had been observing courtship activities between the sharks over several weeks, but it was on this particular day that the mating event transpired. Dr. Lassauce shared his anticipation as he waited with his GoPros, capturing the incredible event that lasted for 110 seconds.
According to Dr. Lassauce’s research colleague, Christine Dudgeon, the involvement of two male sharks in sequential mating with a female is a surprising and significant observation. The study aims to understand the genetic diversity within the species and how it impacts the fertilisation of eggs laid by female leopard sharks each year.
Leopard sharks are considered endangered in parts of the Asia-Pacific region due primarily to overfishing activities. Apart from commercial fishing for fins, the species faces threats like the utilisation of their skin in luxury yacht materials, as highlighted by Dudgeon in an interview with the ABC.
The mating event documented by Dr. Lassauce provides valuable insights into the reproductive behaviours of leopard sharks and underscores the importance of conservation efforts to protect these endangered marine creatures. By shedding light on such rare occurrences, researchers hope to raise awareness about the plight of the leopard sharks and advocate for their preservation.
The discovery of the ‘threesome’ mating event among leopard sharks serves as a reminder of the wonders of the marine world and the need to safeguard vulnerable species like the leopard shark. With continued research and conservation initiatives, scientists strive to ensure the survival and well-being of these remarkable creatures for generations to come.
