The Ganges river shark is so rare that there has been no confirmed record of the species for a decade – and very few ever. But a series of photographs taken at a fish market in Mumbai, India, show the species is still around, and in a unexpected place.

“It’s a species that’s never really been seen in the western Indian Ocean,” says Rima Jabado , founder and lead scientist of the Gulf Elasmo Project – a shark research and conservation organisation – in the United Arabic Emirates.

A …