Maps and News of Sargassum blooms in the Atlantic and Caribbean beaches that are impacted.
https://sargassummonitoring.com/
Also view:
Sargassum Information Hub – https://sargassumhub.org/
Sargassum blooms in the Caribbean Sea – https://optics.marine.usf.edu/
NOAA now produce a monthly Sargassum Inundation Report for the Caribbean Sea, Gulf of Mexico and tropical Atlantic, which gives clear, colour-coded indications as to where levels of weed are at their worst around the coastline. Go to https://cwcgom.aoml.noaa.gov/SIR/ to find out more.