herbier de zostères

OBS: zostères : herbe marine vivace à feuilles linéaires verdâtres, formant de vastes prairies sous-marines dites ""herbiers"".

OBS: turtle grass: (Zostera marina) a submerged marine plant with very long narrow leaves that is found in abundance along the No. Atlantic coast.
OBS: flat: a level tract lying a little depth below the surface of water or alternately covered and left base by the tide.
OBS: turtle grass and eelgrass are synonyms.