The smoolks genus group has replaced its ancestors the green smoolk, and parasitic smoolk. They are the base of many marine and beach ecosystems.
Like its ancestors it absorbs purple light with its yellow chloroplasts and reproduces asexually. Most of the species are photosynthetic and live in the coast, except for individuals that have become free floating and one species even venture into the deep sea.
They range in size from one millimeter organisms at the seafloor to five centimeter organisms. Some land based smoolks have taken to a parasitic lifestyle, and are toxic to prevent them from being eaten by herbivores.