Blue green colour Bioluminescence seen

Last Saturday night about 22.00 hour I witness a mass of blue green bioluminescence
next to the hammerhead at queens borough in the medway We had moored a boat up at the hammerhead pontoon the boat is called Morwenna bassed at shamrock quays Southamptom We sailed from Shamrock quays on the 04/07/10 at 9.30am onwards to St kathrines dock the thames london and on the way back we moored up at the queens borough in the medway That were we spotted the mass of blue green plankton alongside the boats starboard side about 3 to 4 foot in length about 10 to 12 inches wide