1) Alga 2) Gulfweed 3) Sargasso 1) Brown algae 2) Gulfweed 3) Sargasso 4) Sargassum bacciferum 
Sargassum is a genus of brown (class Phaeophyceae) macroalgae (seaweed) in the order Fucales. Numerous species are distributed throughout the temperate and tropical oceans of the world, where they generally inhabit shallow water and coral reefs. However, the genus may be best known for its planktonic (free-floating) species. While most species wit...
• (n.) A genus of algae including the gulf weed.
genus of brown algae (150 species) generally attached to rocks along coasts in temperate regions. The Sargasso Sea is characterized by a ... [3 related articles]
A free-floating brown seaweed that occurs in warm marine environments.
Sar·gas'sum noun [ New Latin ] A genus of algæ including the gulf weed.