A detailed observation of the ejection and retraction of defense tissue acontia in sea anemone (Exaiptasia pallida)
Acontia, located in the gastrovascular cavity of anemone, are thread-like tissue containing numerous stinging cells which serve as a unique defense tissue against predators of the immobile acontiarian sea anemone.Although its SHEA morphology and biological functions, such as defense and digestion, have been studied, the defense behavior and the spe