Algae turns Scottish waters turquoise
Seas around the west coast of Scotland have been taking on a vivid turquoise hue.
The picture postcard scenes are believed to be caused by coccolithophore algae bloom.
This sheds white calcium carbonate plates - which can turn into chalk - and transforms the sea into a photogenic aquamarine colour.
Despite some algae blooms being harmful, scientists do not believe this bloom is.
