David Fleetham / Sargasum frogfish (Histiro histiro) near the surface floating on discarded polypropylene rope, Hawaii.

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.

Juergen Freund / Sargassum frogfish / anglerfish (Histrio histrio) in its floating Sargassum seaweed home, El Nido, Palawan, Philippines

Juergen Freund / Sargassum frogfish / anglerfish (Histrio histrio) in its floating Sargassum seaweed home, El Nido, Palawan, Philippines

Juergen Freund / Sargassum frogfish / anglerfish (Histrio histrio) in its floating Sargassum seaweed home, Miniloc island in the background, El Nido, Palawan, Philippines.

David Shale / Sargassum frogfish (Histrio histrio) camouflaged on Sargassum seaweed off Cape Verde Islands, Atlantic. Seaweed floats in large masses on sea surface

Pascal Kobeh / Sargassumfish / Sargassum anglerfish (Histrio histrio) hiding in a Sargassum seaweed, Sulu sea, Philippines

David Fleetham / Sargassum fish (Histrio histrio) at the sea surface with floating sargassum weed. Hawaii.

Franco Banfi / Sargassum fish (Histrio histrio) swimming with discarded fishing net, Dominica.

Alex Mustard / Sargassum frogfish (Histrio histrio) swimming below the surface in shallow water. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

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