As the sea ice shrinks in the Arctic, the plankton community that produces food for the entire marine food chain is changing. New research shows that a potentially toxic species of plankton algae that lives both via photosynthesis and absorbing food may become an important player in the Arctic Ocean as the future sea ice becomes thinner.
source https://phys.org/news/2021-02-potentially-toxic-plankton-algae-crucial.html