Pictured: large plankton mass off Irish coast 'so big it was spotted by space satellite' - Telegraph

http://www.telegraph.co.uk/science/space/7945157/Pictured-large-plankton-mass-off-Irish-coast-so-big-it-was-spotted-by-space-satellite.html

The electric blue mass was so large it was spotted by satellites hundreds of miles above the planet.