These water dwelling, carnivorous animals are named for a type of flower, no doubt owing to their often colorful flower-like appearances and generally stationary lifestyle. They attach to the substrate with an adhesive foot called their “basal disc,” above which is their body column topped by an “oral disc” surrounded by stinging tentacles. Their diet consists mainly of small fish, shrimp, and other tiny aquatic organisms. With a few highly toxic exceptions, most anemones are harmless to humans. Many sea anemones form a facultative symbiotic relationship with certain single-celled algae species, benefitting from the byproducts of the alga’s photosynthetic processes.