Sargassum Identification Guide
Two species of sargassum are found in the Carribean: Sargassum natans and Sargassum fluitans. The photos and drawings below provide assistance in differentiating between the two.
Click on any photo to open a larger version.
photo by Phillipe Rouja
photo by GCRL
The characteristics described below are useful in differentiating between the two species. However, characteristics vary and identification of a particular sample may not be straightforward.
|Sargassum natans||Sargassum fluitans|
Illustrations by Julia S. Child (Schneider and Searles, 1991)