Ernie Janes,Ernie Janes / RSPB Nature reserve at Titchwell Marsh Norfolk, May

Ernie Janes / Beach and sea at Traigh Lar, North Uist, Hebrides, Scotland, UK, June.

Sue Daly / Bay and beach of La Grande Greve, Sark, Channel Isles, UK, Summer 2009

Merryn Thomas / Par Beach, St. Martin's, Isles of Scilly, UK, September.

Wild Wonders of Europe / Muñoz / Traigh Uuige sand dunes, Androil Beach, Lewis, Outer Hebrides, Scotland, UK, June 2009

Tim Edwards / Barrafundle Bay at dawn Pembrokeshire NP, Dyfed, Wales. summer, horizontal

Robert Thompson / Tranarossan Bay, near Melmore Head, Rosguill Peninsula, County Donegal, Republic of Ireland, August 2011

Adam Burton / Sunset over Constantine Bay in North Cornwall, England. June 2013.

Adam Burton / Sunset over the Brisons and Porth Nanven, a rocky cove near Land's End, Cornwall, England. April 2012.

Hougaard Malan / Photographer atop a seaside cliff. Arniston/Waenhuiskrans, Western Cape, South Africa. August 2013. Non-ex.

Adam Burton / Rockpools on the foreshore on the west coast of Sandoy, Faroe Islands, Europe. June 2012.

Geoff Scott-Simpson / Beach at low tide with shells and pebbles, Porth Dinllaen, Gwynedd, Wales, UK

Alex Mustard / 2020VISION / Mollusc shells washed up on a beach in the Cairns of Coll, Island of Coll, Inner Hebrides, Scotland, UK, North Atlantic Ocean, June 2011

Jean E. Roche / Shells on beach, Camargue, France

Nick Upton / Cast and feeding depression of a Lugworm (Arenicola maritima) on sandy shore at low tide, St.Bees, Cumbria, UK, July.

Philippe Clement / Green sea urchin (Psammechinus miliaris) shell on beach, Belgium

Philippe Clement / Dead shells of Pea Urchins (Echinocyamus pusillus) on beach. The North Sea coast, Belgium, February 2011.

Alex Hyde / Common Limpets (Patella vulgata) on rock in intertidal zone as the tide comes in. Elgol, Isle of Skye, Inner Hebrides, Scotland, UK, March 2012.

Andrew Parkinson / Assorted seashells, Isle of Mull, Scotland, UK

Philippe Clement / Common wentletrap (Epitonium clathrus) shell on beach, Belgium

Nick Upton / Flat periwinkle (Littorina obtusata / Littorina littoralis) on Toothed wrack (Fucus serratus) submerged at mid tide, near Falmouth, Cornwall, UK, August.

Nick Upton / Dense, extensive bed of Tangleweed kelp (Laminaria digitata) exposed on a low spring tide, with sailing yachts on the horizon in the background, Cornwall, UK, August.

Laurie Campbell / Split level view into rockpool showing Edible periwinkles (Littorina littorea) grazing on kelp, Berwickshire Coast, Scotland

Nick Upton / Edible crab (Cancer pagurus) well camouflaged among holdfasts of Cuvie / Forest kelp (Laminaria hyperborea), exposed on a low spring tide, North Berwick, East Lothian, UK, July.

Nick Upton / Shoal of Atlantic herring fry (Clupea harengus) swimming in a rockpool past kelp fronds, near Falmouth, Cornwall, UK, August.

Nick Upton / Yolk and developing embryo visible in Mermaid's purse egg case of Lesser spotted catshark / Dogfish (Scyliorhinus canicula) entangled with Coralweed (Corallina officinalis) in a rockpool. Rhossili, Th...

Brandon Cole / Split level view of a tidepool, marine life includes Ochre sea stars (Pisaster ochraceus), Purple sea urchins (Stronglyocentrotus purpuratus) and various algaes. Oregon Coast, USA, Pacific Ocean.

Wild Wonders of Europe / Campbell / Bottlenosed dolphins (Tursiops truncatus) one jumping the other surfacing, Moray Firth, Nr Inverness, Scotland, May 2008, Sequence 2/4

Chris Gomersall / 2020VISION / Common dolphin (Delphinus delphis) bow-riding, near South Uist, Outer Hebrides, Scotland, UK, June

John MacPherson / 2020VISION / Bottlenose dolphin (Tursiops truncatus) two breaching in evening light, Moray Firth, Inverness-shire, Scotland, UK, August, sequence 2/2. Photographer quote: 'A day of overcast cloud cleared in the la...

Florian Graner / Harbour porpoises {Phocoena phocoena} off Isle of Man, Irish Sea

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) porpoising near the beach, Sado Estuary, Portugal

Solvin Zankl / Harbour porpoise (Phocoena Phocoena) swimming, Fjord and Baelt centre, Norway. Captive, May 2009

Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) feeding on plankton in the surface waters around the island of Coll, Inner Hebrides, Scotland, UK, June. 2020VISION Book Plate. Did you know? The largest Basking sha...

Alex Mustard / 2020VISION / Dorsal fin of a Basking shark (Cetorhinus maximus) at the surface, Cairns of Coll, Inner Hebrides, Scotland. UK, June.

Ernie Janes / Common Seals (Phoca vitulina) hauled out on sand bank at Blakeney Point, Norfolk, England, UK, August.

Fergus Gill / 2020VISION / Male Ringed plover (Charadrius hiaticula) on beach, Outer Hebrides, Scotland, UK, June. Did you know? When Plovers sense danger a parent bird will pretend to have a broken wing to distract predators.

Edwin Giesbers / Oystercatcher (Haematopus ostralegus) on beach, Heligoland, Germany

Alan Williams / Oystercatcher (Haematopus ostralegus) flock in flight, Liverpool Bay, Lancashire, UK, September

Gerrit Vyn / Adult Snowy Plover (Charadrius nivosus) incubating on nest. Bon Secour National Wildlife Refuge. Baldwin County, Alabama, USA. June 2010. NB. This section of coastline was affected by the BP Deepwater...

Mateusz Piesiak / Young American oystercatcher (Haematopus palliatus) snatching food from adult on the shoreline. Long Island, New York, USA, July 2010. Winner, Young Wildlife Photographer, 2011 Wildlife Photographer o...

Fergus Gill / 2020VISION / Male Ringed plover (Charadrius hiaticula) on beach, Outer Hebrides, Scotland, UK, June.

Chris Gomersall / Flock of Arctic terns (Sterna paradisaea) in flight over beach, Northumberland, UK, May

David Tipling / Arctic Tern (Sterna paraidsea) in flight at at breeding colony in front of Sullom Boe Oil terminal, Shetland, Scotland, UK.

Michel Poinsignon / Arctic tern (Sterna paradisaea) in flight, vocalising, aggresive behaviour, Farne Islands, Northumberland, UK, July

Krista Schlyer / Least tern (Sternula antillarum) parent about to feed chick fish, Louisiana, USA. June 2010.

Claudio Contreras / Yellow legged gull (Larus livens) preening, Santispac beach, Bahia Concepcion, Sea of Cortez (Gulf of California), Mexico, May

Colin Varndell / Thrift (Armeria maritima) growing on shingle beach at Bexington, Dorset, UK June