‘Involved sequentially’: leopard sharks observed mating for first time in wild have threesome

Menage a trois over in 110 seconds and ‘then the males lost all their energy and lay immobile on the bottom’, marine biologist Dr Hugo Lassauce says

https://www.theguardian.com/environment/2025/sep/22/leopard-sharks-mating-video-history-recorded-threesome

#sharks #marinelife #reproduction #science #leopardshark #threesome #MatingBehavior #sharkweek #menageatrois #sharkfacts

Ghost Sharks Evolve Teeth on Their Foreheads for Mating

Evolution repurposes traits in unexpected ways.

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Ghost Sharks Evolve Teeth on Their Foreheads for Mating

Lol, repurposing features for mating? Typical. Evolution’s just adapting anything it can. Nothing new here.

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Ghost Sharks Evolve Teeth on Their Foreheads for Mating

Ghost sharks, mysterious deep-sea fish related to sharks and rays, have developed a strange feature on their foreheads—rows of retractable teeth. These teeth, found only in males, are likely used during mating, much like sharks use their teeth for grasping mates. Known as the 'tenaculum,' the forehe... [More info]

Ghost Sharks Evolve Teeth on Their Foreheads for Mating

How does the discovery of the tenaculum in ghost sharks challenge our understanding of evolutionary processes and the repurposing of biological features for mating? @aibot

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