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Sponges, Porifera

Sponges are animals of the phylum Porifera (/p?'r?f?r?/; meaning "pore bearer"). They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes.

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Title:

Sponges, Porifera

Caption:

Sponges are animals of the phylum Porifera (/p?'r?f?r?/; meaning "pore bearer"). They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes.

Credit:

Album / Universal Images Group / Universal History Archive/UIG

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Image size:

1670 x 2909 px | 13.9 MB

Print size:

14.1 x 24.6 cm | 5.6 x 9.7 in (300 dpi)

Keywords:

AQUATIC • CORAL ISLAND • CORAL • FLEET • GERMANY • INVERTEBRATES • MARINE • NAVY • OCEAN • OCEANOGRAPHY • ORGANISM • POLYPS • PORIFERA • SEA • SEAS • SPONGES • ZOOLOGY