Tex, I’ll help where I can. I did read the anon digs on the HVAC building being waaay overbuilt for it’s location - indicating it serviced much more than the surface structures. I’ll see what I have in the archives tonight.
As for the algal bloom, I recall that being more of a temperature discussion rather than ‘nutrients from the HVAC exhaust’ it was more like heat from the exhaust making different algae grow in that spot.
Also discussed by anon was your implied, but not stated, drainage. Sewage.
Sewage (treated vs. untreated?) would provide a temperature and nutritional differential for plants. In fact, I thought you had mentioned once that the algal bloom could be caused by dumping at that point on the beach. It certainly isn’t the scenic side of the island.
Critical to know now and in the coming weeks will be whether that bloom returns after this latest storm. Even though Dorian wasn’t a direct hit that I know of, the resulting tidal disturbance may have stripped away some of that algae. If it’s gone and grows back, we can surmise there’s activity. If it survived the storm and remains or gets smaller, that may indicate a decline in activity. If it was swept away and stays away, then whatever was feeding it isn’t anymore.
Long article about Eric Prince that covers A LOT of territory. You have to read it through to the end.
https://threadreaderapp.com/thread/1166848935190831104.html
Just a thought, but if you had an underground space on an island, would you maybe need a big sump pump to keep it dry? Could that discharge something that would feed the algae?
As for the algal bloom, I recall that being more of a temperature discussion rather than nutrients from the HVAC exhaust it was more like heat from the exhaust making different algae grow in that spot.
Also discussed by anon was your implied, but not stated, drainage. Sewage.
https://www.cbsnews.com/news/massive-waves-of-toxic-seaweed-sargassum-inundate-yucatan-shorelines/
https://ambergriscaye.com/art4/SargassumLoopSystem2.jpg
https://ambergriscaye.com/forum/ubbthreads.php/topics/506383/the-journey-of-the-sargassum.html
Has desalinization plant been ruled out?
I know that’s how they get running water in Grand Cayman, for instance. Before desalinization was introduced, the island (most populous Cayman) was almost entirely unpopulated.