Community
The international Sargassum community
This is not one state's problem and it is not one site's evidence. Below are the communities, monitoring products and feeds we read, cite and link out to — and the ones we need you to carry the petition into.
Coalition
Who this belt already reached
One coastline, many flags
The belt does not check passports. Neither does this movement.
Sargassum lands on Caribbean islands, Mexican and Central American shores, West Africa, Brazil and the United States within the same season. Every flag below is a shoreline already living it. Tap the ones you live on or travel to — we will move that shoreline's news, photos and video to the top for you.
Link out
Reddit communities
Where travelers, residents and mariners post conditions in real time. Bring the petition into the threads you already read.
- redditr/sargassumDedicated Sargassum reporting and imagery.
- redditr/cancunDaily beach-condition threads for Quintana Roo.
- redditr/PuertoRicoIsland-wide condition and cleanup discussion.
- redditr/floridaStatewide beach and canal reports.
- redditr/floridakeysKeys canals, nesting beaches and marinas.
- redditr/CaribbeanCross-island comparisons and season timing.
- redditr/tulumBeach-by-beach arrival photos.
- redditr/SailingOffshore mat sightings from crossings.
Link out
Facebook groups & pages
Local operators and residents coordinate cleanups and post daily photos here. These are the fastest routes to organizational sign-ons.
- facebookSargassum MonitoringThe observer network behind the official arrivals map.
- facebookRiviera Maya News & EventsVessel offloads, barrier deployments, daily tonnage.
- facebookNoticias Playa del CarmenBarrier and crew staging coverage.
- facebookFlorida Beach ConditionsResident condition posts across Florida coasts.
Link out
Monitoring & data sources
Public products we track, cite and link out to rather than re-host. Use these to check any claim on this site.
- siteSargassum Monitoring — Official Map 2026Observer-fed arrivals map for the Caribbean and Atlantic.
- siteSargazoWatchBeach-by-beach daily condition tracking.
- govNOAA CoastWatch — Sargassum Inundation RiskDaily 1 km shoreline inundation-risk product.
- govUSF Optical Oceanography LabSatellite Floating Algae Density and monthly outlook.
- siteSargolicoCommunity condition app for Mexican Caribbean beaches.
- siteCheck Beach ConditionsCrowd-reported beach status.
Link out
Video sources we archive
Short-form video is where the shoreline speaks first. Send us links and we will capture, tag and preserve them.
Momentum
Carry it into your own feed
One signature is hard. A group, a marina, a hotel staff list or a subreddit is a constituency. Post your beach, tag the location, use the hashtags and link the petition.