A hand scooping up some water from a pond or dugout that has a thick layer of green algae on top of it.

Keep close eye on blue-green algae this summer

Heavy blooms appear as a solid shimmering blue-green sheen across the dugout water’s surface with a “pea soup” quality

Often called blue-green algae, cyanobacteria produce toxins that can cause liver damage, gastroenteritis and even death if ingested by livestock.