CASCO BAY, Maine (WMTW) The Maine Department of Marine Resources says it is monitoring a large unusual bloom of Phytoplankton.
Officials say it isn't a threat to humans, unlike other toxic blooms, but it can have harmful effects on fish, shellfish, and other marine life.
The fishing industry is being updated on the situation.
"Karenia Mikimotoi is not considered to be toxic in the same way that some species that it's closely related to are. This species doesn't seem to have that same level of toxicity." Says Andre Pershing of the Gulf of Maine Research Institute.
The bloom has been associated with fish die-offs in Alaska, Japan, and Ireland.
It appears to be caused by a combination of low oxygen caused by the bloom and some kind of toxin.