A question I'm sure we would all like to know the answer to.
From my understanding algae will flourish under the right conditions (sunny, warm, and calm) either until those conditions are removed, or until the algae bloom is so dense that it pretty much kills it's self off through over population. So I guess that is does not effect every where at the same time. If you put 'plankton bloom' into google it will show you some satellite images of previous blooms.
On a different note, I went for a dive at Babbacombe on Wednesday. Vis was around 2m and quite green. All I saw was a few wrasse and unidentifiable shapes disappearing. Oh and two small spider crabs! Hopefully this marks their return. I like spider crab. Easy pickings and tasty food. Cool to watch as well.
I tested a camera I bought on ebay. £30 for a Sony camera, and it claims to be good for 10m without a case! Bargain!
Have a picture of some kelp and crap vis in the shallow.
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