Estimates and automated analysis
Sargassum Check shows estimates built from dated sources and automated analysis. They are information, not safety, health or official advice.
Last updated
Version 2026-10-18. These disclaimers repeat sections 3.2, 3.3 and 3.6 of the Terms of Use and the "Automated analysis" paragraph of the Privacy Policy; where they differ, those pages govern.
Estimates are not safety advice
Every estimate is produced from dated regional satellite products, official bulletins, forecasts, webcams and contributed photos, combined by rules and automated analysis. Sources can be late, incomplete, wrong, or not about the particular beach you are looking at. A regional reading never confirms what is on one shoreline. Missing evidence is shown as unknown, never as clear. A "low confidence" label means what it says.
THE SERVICE IS NOT A SAFETY SERVICE, A HEALTH SERVICE, A WATER-QUALITY REPORT, A WEATHER WARNING SERVICE OR AN OFFICIAL SOURCE OF ANY KIND. It says nothing about whether it is safe to swim, wade, surf, dive, boat, breathe the air near decomposing seaweed, or let children or animals near the water. Sargassum can carry marine life and debris; decomposing sargassum releases hydrogen sulphide and ammonia, which can irritate eyes, skin and airways and can be dangerous to people with respiratory conditions; beaches have rip currents, marine hazards, closures and local rules the Service cannot see. Always follow the flags, lifeguards, signage, closures and advice of local authorities, your hotel and medical professionals. If you have a health condition, ask a doctor before travelling. Nothing on the Service is medical, environmental, legal or professional advice, and you must not treat it as such.
Automated analysis
A photo may be sent to Google's Gemini service for automated beach-condition analysis (how much sargassum is on the sand and in the water, and whether the frame is usable). Webcam frames and hotel-site images are also classified automatically (by Cloudflare Workers AI or Gemini); those are not about you.
Where we show or link to a webcam, it is operated by someone else. We do not control it, cannot vouch for its position, time, or whether it is live, and may analyse its frames automatically for sargassum as the Privacy Policy explains.
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