In a bid to save a species globally, a world-first method of extracting semen from male leopard sharks in the wild has been ...

Australian researchers are putting sharks into a trance to collect semen, aiming to save these predators from extinction ...

The marine scientists are using a special and slightly weird method, known as "tonic immobility", to effectively hypnotize male leopard sharks. It’s kind of basic in principle, though probably tricky ...