Pictures: Kerry's seas shine with nature's night lights

The bioluminescence phenomenon is down to the naturally occurring plankton

The waters at Derrynane pier steps exhibiting bioluminescence. Picture: Vincent Hyland of Wild Derrynane.

Naturally occurring plankton is lighting up the night-time sea in Derrynane, south Kerry, in spectacular shades of blue. 

The phenomenon known as bioluminescence has been captured by marine photographer and filmmaker Vincent Hyland.