The doodle in the middle is a floating colony of polyps. Some follow the traditional design of having tentacles. Others have "spoked wheels." They do not turn, but the flattened tentacles are attached together at the perimeter by a ring running all the way around. The entire structure is sticky to gather plankton. To eat, the polyp sucks in the "wheel" and wipes each gap in the spokes clean with the same number of wedge-shaped, internal palps.
The doodle on the right is a plant with one cap-shaped leaf and two stems. It begins life with one stem, but then grows a second one down from the cap. The second stem puts down roots and the first stem detaches, only to slowly shift into a different position to put down roots elsewhere. Repeating this process, the plant "walks" along the forest floor. It is even capable of walking up tree trunks. Everywhere that it leaves roots behind, the roots give rise to a new plant. When two of these plants meet, their free-swinging stems tend to find each other and they exchange gametes.