Shane Gross / Two grey triggerfish (Balistes capriscus) fight over a large piece of plastic floating at the surface among sargassum seaweed (Sargassum natans) in the Sargasso Sea, Atlantic Ocean.
Norbert Wu / Atlantic Spotted Dolphin (Stenella frontalis) playing with Sargassum weed, Little Bahama Bank, Caribbean
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Tony Wu / Korean sandlace (Hypoptychus dybowskii) fish eggs freshly spawned and attached to Sargassum (Sargassum horneri) by a sticky secretion, Japan, Pacific Ocean.
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Tony Wu / Korean sandlace (Hypoptychus dybowskii) male tending to fresh eggs which a female has deposited on Sargassum (Sargassum horneri), Japan, Pacific Ocean.
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Tony Wu / Korean sandlace (Hypoptychus dybowskii) male tending to fresh eggs which multiple females have deposited on Sargassum (Sargassum horneri), Japan, Pacific Ocean.
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Tui De Roy / Galapagos sargassum (Sargassum albemarlense) growing at the heart of the Cromwell Current upwelling, Galapagos, South America, Pacific Ocean.
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Tui De Roy / Galapagos sargassum (Sargassum albemarlense) growing at the heart of the Cromwell Current upwelling, Galapagos, South America, Pacific Ocean.
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Alex Mustard / Spaghetti seaweed (Himanthalia elongata) and Wireweed (Sargassum muticum) reflected in the calm surface of the sea, Cornwall, UK, English Channel.
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Alex Mustard / Juvenile Pollack (Pollachius pollachius) swimming through shallow water rich with seaweed growth: Wireweed (Sargassum muticum and Sea lettuce (Ulva lactuca), Pendennis Head, Cornwall, UK, English Chan...
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Alex Mustard / Spider crab / Cornish king crab (Maja brachydactyla) in shallow water amongst Wireweed (Sargassum muticum). Pendennis Head, Cornwall, UK. English Channel.
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Alex Mustard / RF - Wireweed (Sargassum muticum) and Spaghetti seaweed (Himanthalia elongata) in shallow water, Cornwall, UK, English Channel. (This image may be licensed either as rights managed or royalty free.)
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Alex Mustard / Dense growth of invasive Wireweed (Sargassum muticum) in shallow water. Looe, Cornwall, England, United Kingdom. British Isles. English Channel, North East Atlantic.
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Franco Banfi / Split image of brown macroalgae (Sargassum sp.) bank drifting on the sea, Dominica, Caribbean Sea, Atlantic Ocean.
Alex Mustard / Dense growth of invasive wireweed (Sargassum muticum) is reflected in the surface of the sea. Looe, Cornwall, England, United Kingdom. English Channel, North East Atlantic.
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Alex Mustard / Dense coverage of invasive wireweed (Sargassum muticum) in shallow water is reflected in the surface. Swanage, Dorset, England, United Kingdom. English Channel. North East Atlantic
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Philippe Clement / Japanese wireweed (Sargassum muticum), invasive brown seaweed originally from Japan, Normandy, France, June
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Shane Gross / Jack fish (Eriola dumerili) taking shelter under a matt of sargassum in the Sargasso Sea.
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Shane Gross / A Planehead filefish (Stephanolepis hispidus) takes shelter in a matt of sargassum in the Sargasso Sea, Atlantic Ocean, International Waters.
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Shane Gross / A plastic gift balloon and ribbon drift with sargassum in the Sargasso Sea, Atlantic Ocean, International Waters.
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Shane Gross / A school of filefifsh take shelter and feed on invertebrates (bottom of frame) found on sargassum in the Sargasso Sea.
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Shane Gross / A large tripletail (Lobotes surinamensis) and Almaco jackfish (Seriola rivoliana) live under the cover of sargassum in the Sargasso Sea. Note plastic packing tie in the right of the frame. Image made...
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Shane Gross / Almaco Jack fish (Seriola rivoliana) take shelter under a sargassum matt with a plastic packing tie in it. Image made in the Sargasso Sea, Atlantic Ocean, International Waters.
Alex Mustard / A raft of sargasso weed (Sargassum natans) in open ocean. Off shore, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.
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Tony Wu / Korean sandlance (Hypoptychus dybowskii) egg clusters on Sargassum (Sargassum horneri). Fish produce sticky secretion in kidneys that adheres eggs to Sargassum. Hokkaido, Japan. May.
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Nick Upton / Japanese wireweed (Sargassum muticum), invasive non-native species in Atlantic Ocean. Cornwall, England, UK. September.
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Nick Upton / Japanese wireweed (Sargassum muticum), invasive non-native species in Atlantic Ocean. Cornwall, England, UK. September.
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Nick Upton / Japanese wireweed (Sargassum muticum), invasive non-native species in Atlantic Ocean. Cornwall, England, UK. September.
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David Fleetham / Sargassum fish (Histrio histrio) at the sea surface with floating sargassum weed. Hawaii.
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Robin Chittenden / Japanese Wireweed (Sargassum muticum) in rock pool, Isle of Wight, Hampshire, UK August
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Solvin Zankl / Algae scientist studying invasive Japanese wireweed (Sargassum muticum) Norway, May 2015.
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Solvin Zankl / Japanese wireweed (Sargassum muticum), Purbeck Marine Wildlife Reserve, Kimmeridge Bay, Dorset, UK, July. Introduced species.
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Solvin Zankl / Japanese wireweed (Sargassum muticum), Purbeck Marine Wildlife Reserve, Kimmeridge Bay, Dorset, UK, July.
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Solvin Zankl / Tide pool with Brown algaes - Toothed wrack (Fucus serratus) and Japanese wireweed (Sargassum muticum) and Red algae (Calliblepharis jubata) Roscoff, France
Solvin Zankl / Common sargasso weed (Sargassum natans) from underwater, Sargasso Sea, Bermuda
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Solvin Zankl / Common sargasso weed (Sargassum natans) on graph paper during scientific research. Sargasso Sea, Bermuda
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Solvin Zankl / Sargasso Weed (Sargassum fluitans) and Corwith Cramer, a 134-foot steel brigantine, split level view, Sargasso Sea, Bermuda, April 2014.
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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
