The common blue damselfly is commonly found in the vicinity of stagnant water. It flies back and forth, low over the surface. The abdomen of the male is blue with black spots. The female is more yellowish, blue with black markings and the back side underneath the last segment is pointed. The dark spot in the wings is diamond-shaped. Common blue damselflies are found just about everywhere, including the wadden region, along the dune coastline and in the delta region.