Sessile species; Прикрепленные виды; Sessiilsed liigid; Sessiili

(also fouling species, attached species, sedentary species, sedentaria) Sessility is a characteristic of invertebrates and primitive Chordata (Thunicata) such that they are not able to move about. Sessile animals are usually permanently attached to a solid substrate(see Periphyton). Sessile animals typically have a motile (free-living) phase in their development or resting phase (vegetative buds). Many sessile animals, including bryozoans, sponges, corals and hydra, are capable of asexual reproduction in situ by the process of budding.