Ernst Haeckel Sea Anemones Marine Vintage Illustration The 49th plate from Ernst Haeckel’s natural history book ‘Kunstformen der Natur’ (Art Forms In Nature) of 1904, showing various sea anemones classified as Actiniae. Victorian era science illustration in lush colors. Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named …