Anemones are called "flowers" on the seabed, and their tentacles extend like "petals", so they are also named "undersea chrysanthemums". Although anemones look like plants, they are actually carnivores. Anemones belong to the animal kingdom, Corallina, Amphibia and Anemone, with more than 1000 species. The common anemones are nipple anemone, carpet anemone and princess anemone, which are in various colors, including pink, yellow, green, blue and white.

Anemones are classified as invertebrates in mariculture. Their bodies are supported by soft sacs and have no bones. Anemones vary in size, from a few millimeters to more than 1 meter. The upper part of the body is the mouth of anemones, surrounded by tentacles of different colors, which are covered with stinging cells to protect themselves and help them catch food.

The reproduction of anemones depends on clean seawater with high dissolved oxygen content. The suitable seawater quality is 0, the salinity ratio is1.024–1.026, the pH value is 8.2–8.4, the temperature is 24–26℃, and the current is moderately strong. In addition, the photosynthesis of most anemones requires strong light, such as the light of metal halide lamps.

Anemones are attached to living stones and other fixed objects on the seabed or in seawater tanks. In seawater tanks, most anemones live on rocks, wood, shells, crabs and other objects with floors, while some anemones without fixed floors will bury themselves in the mud. If the anemone feels uncomfortable around, it will move by itself, choose a good water environment suitable for survival and find a comfortable place. Some anemones can crawl slowly or "somersault" and even swim with tentacles. Anemones can coexist with clownfish and hermit crabs, and like to be carried by hermit crabs to "March" to find food for hermit crabs and drive away enemies. ?

Anemones feed on organic particles, small crustaceans, mollusks and small fish in water. Seawater tanks raised at home are generally fed with shrimp, small fish or finished products.