Excessive outbreaks of seaweed and microalgae are clogging up waters from the Caribbean to the Baltic. Now both are being harvested alongside farmed crops to create ingredients for cosmetics and food products.
Mari Granström says it was her passion for scuba diving that opened her eyes to the continuing problem of toxic microalgae blooms in the Baltic Sea.
The outbreaks occur when tiny cyanobacteria, also called blue-green algae, suddenly multiply rapidly, stretching out on top of the water for potentially kilometres.
Also called eutrophication, it is a form of marine suffocation, and it is a significant environmental concern in the Baltic Sea. It can occur in 97% of the total area of the sea, according to official figures.