Haeckel (1834-1919) served as a scientist, philosopher, physician, and professor. He is credited with introducing several terms in biology that remain in use today, including ecology, phylum, and stem cell. Haeckel displayed remarkable talent as a scientific artist by innovatively depicting life forms. Unlike traditional front-view illustrations, he went beyond, portraying the hidden sides through gaps and holes in skeletons. This unconventional approach produced three-dimensional images, a rarity at the time. Furthermore, many of the organisms he illustrated were previously unknown to the public. No other scientist possessed the ability to create such exquisite artworks while maintaining precise depictions of organisms. The fusion of scientific accuracy with the portrayal of natural beauty encapsulates his philosophy: a belief that everything in the universe harmoniously connects.