Zostera marina is widespread throughout northern areas of the Northern Hemisphere.
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Zostera is found on sandy substrates or in estuaries submerged or partially floating.
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Zostera often forms beds in bay mud in the estuarine setting.
From the en.wikipedia.org
Zostera is able to maintain its turgor at a constant pressure in response to fluctuations in environmental osmolarity.
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(or in some classifications family Zosteraceae) small genus of widely distributed marine plants
Zostera is a small genus of widely distributed seagrass, commonly called marine eelgrass or (outside North America) simply eelgrass (not to be confused with the freshwater plant genus Vallisneria also called "eelgrass"). The genus Zostera contains twelve species.
Generic name for eelgrass or long sea grass; grows in estuaries and bays.