The Bioluminescence Webpage http://lifesci.ucsb.edu/~biolum
You'll probably have heard of glow worms and know roughly what they do - you may even have been lucky enough to have seen them do their stuff for yourself. But you might not be aware that there's a whole glowing world out there - shrimps, fish, worms, squid, single-celled organisms and more, all score highly on the bioluminescence scale.
If this is the case, then this site will help to remedy the situation for you. Here we have a brilliant collection of photos, movies, amazing facts and clear explanations to light up your life, as well as dozens of nuggets of information to excite even the most encyclopaedia-brained natural history lover.
Although there's quite a lot of detailed science in here (the site is aimed mainly at researchers in the area), it's all well enough explained with diagrams and f animations to let you find your way about the subject, even if you don't know your copepods from your dinoflagellates.
There's an amazing movie (for which you'll need a plug-in), illustrating the use of bioluminescence by midshipman fish. They use their glow to camouflage themselves against a light background - the effect will make you smile with admiration. And the photo gallery has pictures of some bizarre creatures that look like they've come straight out of the film "The Abyss." Well worth a look.
If you've never swum in the sea at night and found the crests of the waves - and yourself - lit up like a Christmas tree, now could be the time to find out what you've been missing. Glowing beaches aren't that hard to find around the UK, and if you get the chance to do some nightswimming, at least now you'll know you aren't hallucinating.