What could this be??

reefreak29

Active Member
sargassum natans:
Sargassum species are found throughout tropical areas of the world and are often the most obvious macrophyte in near-shore areas where Sargassum beds often occur near coral reefs The plants grow subtidally and they attach to coral, rocks or shells in moderately exposed or sheltered rocky or pebble areas. In some cases (e.g. Sargasso Sea) there are floating populations.
 
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