National Geographic : 1955 Jun
© National Geographic Society 814 (Enlarged 10times) Tubularia, a Colony of Carnivorous Marine Animals, Droop Like a FadedSummer Garden Some primitive animals, such as these hydroids, develop plantlike structures with pseudo flowers, stems, and roots. A major difference lies indiet. Plants, using chlorophyll and sunlight, make their food from carbon dioxide and water. Hydroids, like anemones and jellyfish, eat other creatures.