Solitary

Most species of water lilies have rounded, variously notched, waxy-coated leaves on long stalks that contain many air spaces and float in quiet freshwater habitats. The stalks arise from thick, fleshy, creeping underwater stems that are buried in the mud. The showy, fragrant, solitary flowers are borne at or above the water surface on long stalks that are attached to the underground stems. Each cup-like flower has a spiral arrangement of its numerous petals.

Solitary

Symbiotic

The oxpecker stands guard while living and feeding on the rhinoceros, watching for danger. The bird warns the rhinoceros of danger by making loud chirping or hissing noises. The rhinoceros treats the oxpecker as a guest.

Symbiotic