Harmful algal blooms will become a more common feature of a warming Arctic. Last summer, a massive bloom was detected off the coast of Western Alaska, almost by chance, when scientists sailing through the Bering Strait and Chukchi Sea found worryingly high levels of Alexandrium catenella.

Researchers have found a high level of potentially harmful algae in the waters near Teller, Brevig Mission, Wales, Little Diomede and Shishmaref. They are now advising that residents of those areas…

Researchers stepping off the research vessel Norseman II in Nome last weekend, brought significant news of having found very high concentrations of a phytoplankton called Alexandrium catenella in regional waters. Alexandrium is an algae that can produce saxitoxins, which can cause dangerous paralytic shellfish poisoning in people. The scientists issued an advisory, notifying Norton Sound Health Corporation, UAF Sea Grant and the Alaska Division of Public Health.

Toxic algal blooms which can be fatal to humans, are increasing across the world as temperatures rise, according to the first global survey of dozens of freshwater lakes based on 30 years of NASA data. 

Discolored marine waters near Haines may be reflective of the extremely high level of algae in southeast waters this month.