Crytoidea–Flaschenstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… https://www.rawpixel.com/image/2272986/free-illustration-image-haeckel-vintage-marine-lifeFree Image from public domain licenseSpumellaria–Schaumstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… https://www.rawpixel.com/image/2272984/free-illustration-image-ernst-haeckel-sea-centuryFree Image from public domain licensePhaeodaria–Rohrstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… https://www.rawpixel.com/image/2271894/free-illustration-image-ernst-haeckel-radiolariaFree Image from public domain licenseSpyroidea–Nükchenstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of… https://www.rawpixel.com/image/2273531/free-illustration-image-ernst-haeckel-sea-microorganismFree Image from public domain license