New research suggests that the prehistoric megalodon, the biggest shark known to have existed, was even larger than we thought. British journalist and translator who joined Diario AS in 2013.

But scientists at the University of Auckland in New Zealand recently recorded a rig shark, or Mustelus lenticulatus, making a sharp clicking sound, most likely by snapping its teeth together ...

In the study, researchers detail evidence of the rig shark – a small species found ... at the Swedish University of Agricultural Sciences recorded two species of stingrays making clicking ...