Tuesday, March 21, 2023

Sargassum 2

Follow-up to this post

A question I had about that seaweed mat in the Atlantic: is it coming to Florida, especially now that spring break is nearly here? The answer is No, it won't pollute those beaches, though there may be a bit of a nuisance further south in the Keys.

Here's a current satellite-based map of its size and location between Africa and the Gulf of Mexico:


The mat is not without advantages. It's a good habitat for some sea life, and it absorbs carbon dioxide (it's brown algae). But in excess, it could cast shade on big ocean areas and that's potentially a low-light problem for marine life.

Science labs are watching the mat but haven't answered all the questions yet - except for the obvious advice to keep boats out of it. See one that is trapped in a mess here.

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