Sponge - Wikipedia Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them
What is a sponge? - NOAAs National Ocean Service Sponges are animals with dense skeletons that are highly adapted to their environments, although it is easy to see why they may be mistaken for plants Sponges are found in a wide variety of colors, shapes, and sizes – and scientists believe that the colors of the sponge may act as a protection from the sun’s harmful UV rays
Sponge | Definition, Features, Reproduction, Facts | Britannica sponge, any of the primitive multicellular aquatic animals that constitute the phylum Porifera They number approximately 5,000 described species and inhabit all seas, where they occur attached to surfaces from the intertidal zone to depths of 8,500 metres (29,000 feet) or more
Sponges - MarineBio Conservation Society Sponges are multicellular organisms belonging to the phylum Porifera They are one of the simplest and oldest forms of animals on Earth Sponges are considered animals because they are multicellular and lack cell walls, which distinguishes them from plants and fungi
Sponge Animal Facts - Demospongiae - A-Z Animals Sponges are one of the simplest, and perhaps oldest, animals on the entire planet They are marine animals that are easily mistaken for plant life due to their lack of nervous system, internal organs, and mobility
Sea Sponges Facts - ThoughtCo There are over 6,000 species of sponges; most live in the marine environment, although there are also freshwater sponges Natural sponges have been used by humans to clean and bathe with for at least 3,000 years Sponges are classified in the phylum Porifera
Sponges: Characters, Classification and Types | Zoology Sponges differ from Protozoa in having the following features: 1 The canal system 2 The characteristic skeleton 3 The development of a multicellular body from a fertilised egg by cleavage; and in this feature the sponges become more complex than a colonial protozoan and resemble with the Metazoa Therefore, its protozoan affinity stands no