''Elymus athericus'', the sea couch, is a species of perennial grass in the family
Poaceae (true grasses). They have a self-supporting growth form and simple, broad leaves. Individuals can grow to 65 cm tall.
The species is invasive to the
Mont Saint-Michel bay
The Mont-Saint-Michel Bay (french: baie du Mont-Saint-Michel, br, Bae Menez-Mikael) is located between Brittany (to the south west) and the Normandy peninsula of Cotentin (to the south and east). The bay was listed as a UNESCO world heritage site ...
and has altered the area's ecology.
Sources
References
athericus
Flora of Malta
{{Pooideae-stub