[haffast]

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.

---

Maybe just trapped Sargassum seaweed(wind, currents, LSJI cove orientation)?

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

[No_Doll_i]

Glad I scrolled to the end of that slide to see who wrote it. Lame

[TXnMA]

Thanks, for the Sargassum links, haffast! I spent a considerable bit of my [misspent] youth roaming all along the (then, deserted) beaches of Galveston Island -- and am very familiar with Sargassum, and how it appears when ashore and when floating.

The stuff on LSJI is not a stemmed plant, but definitely a cellular form of algae -- which flows and floats with the surface, and breaks up into floating "scum" patches which slowly disperse as they drift away from shore. This flow/wave motion behavior is very obvious in drone videos. [FWIW, as a physical chemist, I seldom admit that I also have a BS in biology...] '-}

When viewing over a span of time, I believe I can see at least one consistent "point source" very near the beach.

Thanks for "pitching in"! The richness of many eyes and varied experience is what makes this collaboration so effective...

If you're really interested, I'll add you to the list of FReepers whom I'll ping as I release pages of my "LSJI-OHI" website. Just ask...

Fregards,
TXnMA