A FROG that can perch on the tip of your finger with room to spare has been claimed as the world’s smallest vertebrate species, smaller than a fish that got the title in 2006.

A funky, psychedelic fish that bounces chaotically on the ocean floor like a rubber ball has been classified as a new species.

Researchers say they have finally found a potent repellent to drive away sharks – a goal that has eluded scientists for decades.