Pete Oxford / Broadleaf Gulfweed (Sargassum fluitans) floating mat, Ambergris Caye, Belize

Solvin Zankl / Sargassum fish (Histrio histrio) in Broad-toothed gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda

Solvin Zankl / Sargassumfish (Histrio histrio) swimming near Broad-toothed gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda.

Solvin Zankl / Tiny crab on Broad-toothed Gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda

Solvin Zankl / Sargasso weed (Sargassum fluitans) with Pugnose Pipefish (Syngnathus pelagicus). Sargasso Sea, Bermuda.

Solvin Zankl / Sargasso weed (Sargassum fluitans) with Pugnose Pipefish (Syngnathus pelagicus). Sargasso Sea, Bermuda.

Solvin Zankl / Sargasso Weed (Sargassum fluitans) and Corwith Cramer, a 134-foot steel brigantine, split level view, Sargasso Sea, Bermuda, April 2014.

Solvin Zankl / Scientists looking at Sargassum seaweeds, with Common sargasso weed on left (Sargassum natans) and Broad tooth gulf weed (Sargassum fluitans) Sargasso Sea, Bermuda

Solvin Zankl / Shrimp (Hippolyte coerulescens), Hydroids (Aglaophenia latecarinata) and Sargasso barnacles (Lepas pectinata) on Broad-toothed gulfweed (Sargassum fluitans) Sargasso Sea, Bermuda

Solvin Zankl / Sargassum nudibranch (Scyllaea pelagica) camouflaged in Broad-toothed gulfweed (Sargassum fluitans) Sargasso Sea, Bermuda

Solvin Zankl / Sargassumfish (Histrio histrio) swimming in Broad-toothed gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda.