Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

"Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876" by Ernst Haeckel is a scientific exploration that presents an in-depth study of Radiolaria discovered during the H.M.S. Challenger expedition. The book meticulously catalogues the physical forms, groupings, and environmental importance of these tiny sea creatures. Haeckel reflects on his decade-long commitment to understanding the enormous diversity of Radiolaria, explaining the methods used to gather and study specimens from great ocean depths, stressing how important Radiolaria are to understanding life in the ocean. He shares his original goals and the problems he handled. The book shows a detailed look at over 4,300 species, emphasizing the vast diversity within Radiolaria. In addition, the report highlights the important connection between the lifecycles of the organisms and their environments.