Common name: common eel-grass

General information

Eelgrass, scientifically known as Zostera marina, is a species of marine seagrass that plays a crucial ecological role in coastal environments. It forms dense underwater meadows that are important habitats for a wide range of marine life, including fish, invertebrates, and microorganisms. Eelgrass is not a true grass but a flowering plant adapted to the submerged marine environment.

In the aquarium hobby, eelgrass can be a unique addition to a cold-water marine setup, providing a naturalistic aesthetic and habitat for small invertebrates and fish. It's also valued for its ability to oxygenate the water and act as a natural filter, absorbing nutrients and helping to maintain water quality.

Care

Eelgrass requires specific conditions to thrive in an aquarium. It prefers cooler water temperatures and moderate to high lighting to support photosynthesis. Substrate should be sandy and rich in nutrients to allow for proper root development. Regular trimming may be necessary to maintain the desired height and density of the meadow.

Symbiosis

While eelgrass does not have the same type of symbiotic relationships as corals or anemones, it does provide a foundational habitat for many species. It offers shelter and breeding grounds for various organisms, and its presence can enhance the biodiversity of an aquarium by supporting a healthy microfauna population.

Habitat

Zostera marina is found in temperate and subarctic regions of the Northern Hemisphere. It typically grows in sheltered coastal waters, estuaries, and bays where the substrate is soft and sandy. Eelgrass beds are vital to coastal ecosystems, offering protection against erosion and serving as nurseries for many species of fish and invertebrates.