"Seaweed has flowers"
Algae cannot flourish. They reproduce by division rather than by fertilization. Regarding algae blossom actually means a mass reproduction of algae. However, when come up in the marine environment in which they live, through a green swamp, some seaweed help to achieve natural-colored water stains. For example Euglena Sanguinea or Oscillatoria Rubescens "bloom" with a bright red.