sea_wrack
1. [ noun ] (botany) submerged marine plant with very long narrow leaves found in abundance along North Atlantic coasts
Synonyms: grass_wrack Zostera_marina eelgrass
Related terms: aquatic_plant Zostera
2. [ noun ] (biology,botany) growth of marine vegetation especially of the large forms such as rockweeds and kelp
Synonyms: wrack
Related terms: seaweed