Weather Blog Brilliant Bloom in the Baltic Sea An explosion in the numbers of cyanobacteria transformed the Baltic Sea into a swirling canvas of green in summer 2025. Read More… About Author OTW Observer See author's posts Post navigation Previous Whirling Dust and Ancient FloodsNext A BIG Moment for Apollo 11 Related Stories Spring Rains Saturate Michigan Weather Blog Spring Rains Saturate Michigan April 17, 2026 Eyeing the Richat Structure Weather Blog Eyeing the Richat Structure April 16, 2026 NASA’s SPHEREx Mission Maps Water Ice Throughout Cygnus X Weather Blog NASA’s SPHEREx Mission Maps Water Ice Throughout Cygnus X April 15, 2026