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The Collaborative International Dictionary
Sargassum

Sargassum \Sar*gas"sum\, n. [NL.] A genus of alg[ae] including the gulf weed.

Wiktionary
sargassum

n. Any of many brown algae of the genus (taxlink Sargassum genus noshow=1); gulfweed

WordNet
sargassum

n. brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea [syn: gulfweed, sargasso, Sargassum bacciferum]

Wikipedia
Sargassum

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, and the genus is widely known for its planktonic (free-floating) species. While most species within the class Phaeophyceae are predominantly cold water organisms that benefit from nutrients upwelling, genus Sargassum appears to be an exception to this general rule. Any number of the normally benthic species may take on a planktonic, often pelagic existence after being removed from reefs during rough weather; however, two species (S. natans and S. fluitans) have become holopelagic—reproducing vegetatively and never attaching to the seafloor during their lifecycle. The Atlantic Ocean's Sargasso Sea was named after the algae, as it hosts a large amount of sargassum.

Usage examples of "sargassum".

The stars were brilliant now and the air smelled of sargassum, mollusks, and pine.

Clumps of dried air-weed and red kelp were encrusted across the bitumened plates of the pontoon, shrivelled and burnt by the sun before they could reach the railing around the laboratory, while a dense refuse-filled mass of sargassum and spirogyra cushioned their impact as they reached the narrow jetty, oozing and subsiding like an immense soggy raft.

At this sharp bend lie reef fish, coml, sargassum, oyster drills, sea urchins.

Sargassum basins doubtless contributed considerable and important deposits of sediment to the sea floors beneath the waters which it inhabits.

No spray or mint could mask his breath, which smelled now of kelp, now of sargassum, and at its worst, of a weathered planktonic bloom.