Anemone and Hermit Crab
Photo by Darlyne A. Murawski, National Geo.
Some anemones piggyback on the shells of hermit crabs. The maneuver is mutually beneficial: The anemones get a mobile, competition-free surface on which to perch and pick up scraps, and the crabs get an effective camouflage and protection provided by the sea anemone’s toxic tentacles.
(via: National Geo)
