Lucy In The Sea With Diamonds...

... or perhaps emeralds! She has been blowing our minds at the vico for the last few nights, with her spectacular green phosphorescent light show.
The following description of the phenomenon is from the Trinity Education Centre:

Dinoflagellates are microscopic single-celled algae which float freely in
oceans and waterways throughout the world.  They are a major part of the
phytoplankton which is at the base of most aquatic food chains.

Not all species of dinoflagellate are bioluminescent but some are.
Normally there are so few of the bioluminescent species in the water that
we do not notice that they are there.  However, dinoflagellates sometimes
produce blooms in which a particular species overproduces and becomes very
very abundant.  We don't know exactly why the aquatic ecosystems become so
over-balanced and this is an area of 'hot' research.  In some cases it
appears that the blooms may be the result of excess nutrients in the water
from human activities.

So they may provide further proof of the "human activities" floating by at the Vico from all those nappies!
(c.f. Richard Shakespeare quote in Irish Independent from the Seapoint Raped Of Blue Flag post.)