Illustrations of marine life by Ernst Haeckel. Haeckel (1834 - 1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist, and artist. He discovered, described, and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology. https://infogalactic.com/info/Ernst_Haeckel