Corroborated journalistic caseMonroe County, Florida · 2026 season
2026 Florida Keys inundation
USF reported severe southeast Florida beaching; Monroe County described a widespread Keys influx contributing to fish kills; Key West moved a public event because of odor; residents and marine professionals supplied dated photographs and accounts.
Honest conclusion
Documented event and disruption; obtain FWC/SEAFAN event records and site measurements.
[S01] University of South Florida Optical Oceanography Laboratory[S09] Monroe County / Keys Weekly[S10] City of Key West
Measured evidenceBig Pine Key, Florida · FIU treatment/control monitoring
Big Pine Key Canal 266
FIU treatment/control monitoring found organic content fell from 31.9% to 1.0% and average sediment depth from 154 cm to 40 cm after removal; conditions later moved back toward baseline.
Honest conclusion
Strong organic-loading and removal evidence; mixed wrack, not Sargassum-only attribution.
[S08] Florida International University
Official recordMiami Beach, Florida · 2026
Miami Beach removal operations
The city reports large 2026 removal volumes, daily management constraints, hotspot geography and the regulatory difficulty of in-water collection.
Honest conclusion
Operational burden and policy barrier; retain dated scope.
[S07] City of Miami Beach[S26] Miami-Dade County[S27] Miami-Dade County
Official recordNorth Miami Beach, Florida · DOH evaluation
North Miami Beach health concerns
Florida DOH evaluated community complaints about rotting-seaweed odor and rashes and advised respiratory-sensitive people to avoid strong odors, while judging long-term open-air risk minimal.
Honest conclusion
Documented complaints and guidance; not proof of chronic Florida disease.
[S11] Florida Department of Health
Measured evidenceMiami-Dade County, Florida · 2025-2026 studies
South Florida chemistry
University of Miami studies measured sulfur emissions during decomposition, elevated arsenic in Sargassum and enterococci in wrack.
Honest conclusion
Measured exposure pathways; not automatic proof of illness.
[S12] University of Miami[S13] University of Miami / FIU[S14] Environmental Monitoring and Assessment[S15] Exposure and Health
Measured evidencePuerto Rico · Peer-reviewed field study
Jobos Bay brown tide
Black et al. documented Sargassum brown-tide biogeochemical impacts in Jobos Bay, a U.S. field case of nearshore inundation effects.
Honest conclusion
U.S. field evidence that inundation changes nearshore chemistry and habitat.
[S17] Black et al.
Measured evidenceQuintana Roo, Mexico · van Tussenbroek et al.
Mexican Caribbean seagrass collapse
Field studies document severe brown-tide effects on seagrass meadows and marine animals along the Mexican Caribbean coast.
Honest conclusion
Peer evidence of what sustained inundation does to shallow habitat when nothing intercepts it.
[S16] van Tussenbroek et al.
Measured evidencePuerto Rico, USVI and coastal Florida · NOAA NCCOS
Modeled U.S. economic hit
NOAA NCCOS modeling quantifies a multimillion-dollar hit to coastal economies from Sargassum inundation.
Honest conclusion
Federal analysis already prices the cost of doing nothing.
[S19] NOAA NCCOS
