Tiny sharks provide glowing clue


Tiny sharks in South East Asia have helped scientists to understand the origins of glowing shark species.

A number of deep-dwelling sharks have special light-emitting organs on their undersides that allow them to glow.

A study of pygmy sharks now suggests the ability to control the trick evolved from a shallow water ancestor.

Dr Julien Claes from the Catholic University of Louvain in Belgium led the research.

He said: “bioluminescence remains one of the most mysterious areas of shark biology.”

The findings are published in the Journal of Experimental Biology.

According to Dr Claes more than 10% of currently described shark species are luminous.

source: http://www.bbc.co.uk/nature/17812363

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