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- What is a sponge? - NOAAs National Ocean Service
Sponges — simple aquatic animals with dense, yet porous, skeletons — are highly adapted to their environments A variety of sponges dot the seascape of Flower Garden Banks National Marine Sanctuary
- 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
- 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 : Cleaning Tools - Target
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- Sponges: Characters, Classification and Types | Zoology
Sponges are cultivated for commercial purposes Approximately 10,000 species of sponges are known at present, and the phylum is divided into three classes, viz , Calcarea or Calcispongiae, Hexactinellida or Hyalospongiae, and Demospongiae and about twelve orders chiefly on the type of skeleton
- 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
- What Are Sponges and Why Do They Matter? - NOAA Ocean Exploration
Sponges help create habitat, filter particles from seawater, contribute to carbon, nitrogen, and silica cycling They have also been used for bathing since ancient Egypt
- Sea Sponges Facts - ThoughtCo
Sponges are found on the ocean floor or attached to substrates such as rocks, coral, shells, and marine organisms Sponges range in habitat from shallow intertidal areas and coral reefs to the deep sea
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