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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 While sponges, like corals, are immobile aquatic invertebrates, they are otherwise completely different organisms with distinct anatomy, feeding methods, and reproductive processes
Sponge - Types, Size, Anatomy, Habitat, Diet, Lifespan . . . Sponges, or sea sponges, are primarily marine invertebrates that constitute the phylum Porifera, and are thus also referred to as poriferans The name Porifera derives from the words porus, meaning ‘pore,’ and -fer, meaning ‘bearing or carrying ’ This etymology reflects the numerous tiny pores or openings that characterize members of this phylum
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
Sponge Animal Facts - 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 a nervous system, internal organs, and mobility
Sponges (Phylum Porifera): What Are They? - Biology Insights Sponges, classified under the phylum Porifera, are aquatic animals They are among the earliest divergences in the animal kingdom, with fossil records dating back approximately 600 million years
Facts About Sponges (Porifera) - ThoughtCo Sponges are primitive animals with no organs, living mostly in marine environments There are three main sponge types: glass sponges, demosponges, and calcareous sponges, each with unique features Sponges filter water to get food and oxygen through their porous body walls
Porifera (sponges) | INFORMATION | Animal Diversity Web Sponges are a diverse group of sometimes common types, with about 5000 species known across the world Sponges are primarily marine, but around 150 species live in fresh water
Sponge - Reproduction, Filtering, Habitat | Britannica The fertilization of an egg by a spermatozoan is peculiar in sponges Asexual reproduction occurs in sponges in various ways, such as gemmulation, formation of stolons, and fragmentation of individuals