Maine officials identify phytoplankton behind Casco Bay bloom
The phytoplankton bloom likely responsible for clam deaths in Casco Bay has been identified may be past its peak, Maine Department of Marine Resources officials say.On Sept. 7, DMR received Marine Patrol flyover images of an unidentified bloom that prompted an investigation. The following day, water sampling confirmed the presence of Karenia mikimotoi in Portland Harbor at levels known to affect fish and shellfish.DMR said the bloom remains centered in Casco Bay but has been visible from the Mai...