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https://en.wikipedia.org/wiki/Porifera
Movement. Although adult sponges are fundamentally sessile animals, some marine and freshwater species can move across the sea bed at speeds of 1–4 mm (0.039–0.157 in) per day, as a result of amoeba-like movements of pinacocytes and other cells.Kingdom: Animalia
https://poriferaf.blogspot.com/2007/02/movement.html
Commonly, sponges tend to rely on water currents for movement. Being sessile creatures can come with its advantages and it can danger the animal substantially. Less energy is spent on movement, and resources are spent on growth and reproduction.
http://sponges101.weebly.com/movement--support.html
Support Sponges include a system of pores (also called ostia) and canals, in which water passes. Water movement is driven by the beating of flagellae, which are located on specialized cells called choanocytes (collar cells). Sponges are either radially symmetrical or asymmetrical.
https://courses.lumenlearning.com/boundless-biology/chapter/phylum-porifera/
Under experimental conditions, researchers have shown that sponge cells spread on a physical support demonstrate a leading edge for directed movement. It has been speculated that this localized creeping movement may help sponges adjust to microenvironments near the point of attachment.
https://ucmp.berkeley.edu/porifera/poriferalh.html
The water movement through some sponges is aided by ambient currents passing over raised excurrent openings. This moving water creates an area of low pressure above the excurrent openings that assists in drawing water out of the sponge. Sponges are capable of regulating the amount of flow through their bodies by the constriction of various ...
https://www.thoughtco.com/sponges-profile-p2-130755
Sponges (Porifera) are a group of animals that includes about 10,000 living species. Members of this group include glass sponges, demosponges, and calcareous sponges. Adult sponges are sessile animals that live attached to hard rocky surfaces, shells, or submerged objects.
https://quizlet.com/99465457/biology-chapter-17-flash-cards/
Feeding: filter feeders. movement of flagella on the collar cells produces a current of water which flows through the body wall support & movement Protein fibers and sharp slivers of silica or calcium carbonate provide support can move very slow considered sessile "they remain ancored to …
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