Nature2014-2016US West Coast / North Americahigh confidence

A toxic algal bloom stretched along the entire West Coast of the United States during the Pacific 'Blob' period.

Notes on verification

Confirmed by multiple independent, authoritative sources including UW, NOAA, and UC Santa Cruz research, consistently describing a coastwide toxic algal bloom coinciding with the 'Blob' marine heatwave. [tier=gold indep_score=0.723 clusters=3 claim_tier=notable]

Sources