Guy Edwardes / Rock formations at Kimmeridge Bay, Clavell Tower in background, Isle of Purbeck, Jurassic Coast, Dorset, England, UK. December 2010.
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Nick Upton / Common starfish (Asterias rubens) moving in a rockpool, real time, Cornwall, England, UK, September.
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Nick Upton / Common prawns (Palaemon serratus) and a Rock goby (Gobius paganellus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.
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Nick Upton / Rock goby (Gobius paganellus) stealing food from a scavenging Common prawn (Palaemon serratus) in a rockpool, Cornwall, England, UK, September.
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Ernie Janes / Low tide on the Wash, Snettisham, Norfolk, England, UK, February.
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Ole Jorgen Liodden / Marine iguana (Amblyrhynchus cristatus) silhouetted on the coast at sunset, Galapagos.
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Hougaard Malan / Lighthouse at sunset. Kommetjie, Cape Town, South Africa. November 2008.
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Hougaard Malan / Large wave crashing against rock shelf. Luphathana, Pondoland, Eastern Cape, South Africa. June 2012.
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Nick Upton / Split level view of a Beadlet anemone (Actinia equina) attached to a boulder encrusted with Maerl (Lithothamnion glaciale) a red coralline alga, in a large rockpool, Crail, Scotland, UK, July
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Wild Wonders of Europe / Novák / Aerial view of coastal landscape at low tide with channels and pools, Hallig, Germany, April 2009
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Wild Wonders of Europe / Novák / Aerial view of channels and pools left in sand at low tide, Hallig, Germany, April 2009
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Kirkendall-Spring / Tidal pool and rocks on the shore of Cape Lookout State Park, Oregon, USA