London Bridge, coastal feature along the Great Ocean Road, Victoria, Australia

View from coastal path of Durdle Door, arch of Purbeck limestone, near West Lulworth, Dorset, England, UK

Coastal sea cliffs and sea stacks near Cape Wrath and Sandwood Bay, Highland Region, Scotland

Coastal sea cliffs and sea stacks near Cape Wrath and Sandwood Bay, Highland Region, Scotland

The rocky coast around Ha'ateiho, Tongatapu, Tonga, South Pacific, Pacific

Ha'ateiho, big rock arch in Tongatapu, Tonga, South Pacific, Pacific

Navagio Beach and shipwreck at Smugglers Cove on the coast of Zakynthos, Ionian Islands, Greek Islands, Greece, Europe

Navagio Beach and shipwreck at Smugglers Cove on the coast of Zakynthos, Ionian Islands, Greek Islands, Greece, Europe

Rock, sea stacks and waves at dawn, Bandon Beach, Oregon, United States of America, North America

Haedong Yonggungsa temple, Busan, South Korea, Asia

Coastal landscape, Cabo de Gata natural park, looking east towards San Jose, Almeria, Andalusia, Spain, Europe

Coastal rock formations at Wembury Bay in Devon, England, United Kingdom, Europe

Coastal rock formations at Wembury Bay in Devon, England, United Kingdom, Europe

Weathered coastal defences at Porlock Weir in Exmoor National Park, with the evening lights of Wales visible across the Bristol Channel, Somerset, England, United Kingdom, Europe

City skyline from Pirita, Tallinn, Estonia, Baltic States, Europe

Aerial image of Old Harry Rocks, chalk stacks located directly east of Studland, north of Swanage, Dorset, England, United Kingdom, Europe

Aerial image of Old Harry Rocks, chalk stacks located directly east of Studland, north of Swanage, Dorset, England, United Kingdom, Europe

Bedruthan Steps, Cornwall, England, United Kingdom, Europe

Spectacular geological formations at Westcombe Beach in the South Hams, Devon, England, United Kingdom, Europe

The Armed Knight rock stack and Longships Lighthouse off the coast at Land's End, Cornwall, England, United Kingdom, Europe

Perce and Rocher Perce (Perce Rock), Quebec, Canada, North America

Celtic Monastery, Skellig Michael, UNESCO World Heritage Site, County Kerry, Munster, Republic of Ireland, Europe

Torre Paola, Sabaudia, Latina, Lazio, Italy, Europe

Dunstanburgh Castle, Northumberland, England, United Kingdom, Europe

Steep cliffs filled with nesting birds on the south side of Bjornoya (Bear Island), Svalbard, Norway, Scandinavia, Europe

Aerial view of mountains, glaciers and ice fields on the west coast of Spitsbergen on a commercial flight from Longyearbyen to Oslo, Svalbard, Norway, Scandinavia, Europe

Steep cliffs filled with nesting birds on the south side of Bjornoya (Bear Island), Svalbard, Norway, Scandinavia, Europe

Mirissa, Sri Lanka, Asia

Tourist at Mirissa Beach, Matara District, Southern Province, Sri Lanka, Asia

Dramatic coastal scenery at sunset, Hartland Quay, North Devon, England, United Kingdom, Europe

Looking north towards Kynance Cove from Lizard Point, the most southerly point in mainland Britain, Cornwall, England, United Kingdom, Europe

River Heddon flows into the sea at Heddons Mouth, Exmoor National Park, Devon, England, United Kingdom, Europe

Aerial view of Butterfly Valley and the Lycia coastline, Lycian Way, near Fethiye, Oludeniz, Mediterranean, Turkey, Asia Minor, Eurasia

Tidewater glacier in the Strait of Magellan, Patagonia, Chile, South America

Cliffs and rock architecture at Ponta da Piedade, Lagos, Algarve, Portugal

The gigantic Gruta de Benagil sea cave (Benagil Cathedral), Algarve, Portugal

Cliffs and rock architecture at Ponta da Piedade, Lagos, Algarve, Portugal

Basalt cliffs and rock stack, Halsenifs Hellir Beach, near Vik i Myrdal, South Iceland, Iceland, Polar Regions

Red lichen on rocks, Wineglass Bay, Freycinet National Park, Freycinet Peninsula, Tasmania, Australia, Pacific

Cliffs of Coumeenoole Beach at sunset, Dingle Peninsula, County Kerry, Munster, Republic of Ireland

Dramatic sky over Bridligton from Sewerby Rocks, East Riding of Yorkshire, England, United Kingdom, Europe

Cave of Poetry (Grotta della Poesia), Roca Vecchia, Lecce, Salento, Apulia, Italy

Cave of Poetry (Grotta della Poesia), Roca Vecchia, Lecce, Salento, Apulia, Italy

Cave of Poetry (Grotta della Poesia), Roca Vecchia, Lecce, Salento, Apulia, Italy

Kimmeridge Bay on the Dorset coast at sunset, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Shell Beach, yachts anchored in turquoise bay, people in sea, Gustavia, St. Barthelemy (St. Barts) (St. Barth), West Indies, Caribbean, Central America

Waterfall at Kilt Rock, famous basaltic cliff near Staffin, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Rocky ledges at Kilve Beach, Somerset, England, United Kingdom, Europe

The world famous blue hole cove on the island of Gozo, Malta

Moulin Huet Bay, Guernsey, Channel Islands

Praia de Parasio beach, Carvoeiro, Algrave, Portugal

Praia Dona Ana coastline, Ponta da Piedade, Lagos, Algarve, Portugal

Praia Dona Ana coastline, Ponta da Piedade, Lagos, Algarve, Portugal

View over Vagator Beach, Goa, India, Asia

Heermann's gulls (Larus heermanni), Isla Rasa, Gulf of California (Sea of Cortez), Mexico, North America

Heermann's gull (Larus heermanni), Isla Rasa, Gulf of California (Sea of Cortez), Mexico, North America

View of Old Town, Budva, Montenegro, Europe

Jeongbang waterfall cascading into the sea, Seogwipo City, Jeju Island, UNESCO World Heritage Site, South Korea, Asia

Castlepoint Lighthouse, Castlepoint, Wellington Region, North Island, New Zeland, Pacific

Bamburgh Castle and coastal landscape at sunrise, Bamburgh, Northumberland, England, United Kingdom, Europe

Bow Fiddle Rock, Portnockie, Moray, Scotland, United Kingdom, Europe

The Crown engine houses near to Botallack, UNESCO World Heritage Site, Cornwall, England, United Kingdom, Europe

Old wreck and Black Nab at Saltwick Bay, near Whitby, North Yorkshire, Yorkshire, England, United Kingdom, Europe

Beach, Mirissa, Sri Lanka, Asia

Dramatic coastal scenery at sunset, Hartland Quay, Devon, England, United Kingdom, Europe

Sea arch at Flamborough Head, East Yorkshire, Yorkshire, England, United Kingdom, Europe

Giant Lewisian gneiss rock on a showery evening at Mealista on the south west coast of Lewis, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

Aerial view of mountains, glaciers and ice fields on the west coast of Spitsbergen on a commercial flight from Longyearbyen to Oslo, Svalbard, Norway, Scandinavia, Europe

RAF helicopter performing a coastal rescue at the base of the steep cliffs of Spekes Mill Mouth, Hartland, Devon, England, United Kingdom, Europe

Rocks on the beach at Carnoustie, Angus, Scotland, United Kingdom, Europe

Steep cliffs filled with nesting birds on the south side of Bjornoya (Bear Island), Svalbard, Norway, Scandinavia, Europe

Snow storm approaching Alkefjelet, Cape Fanshawe, Spitsbergen, Svalbard, Norway, Scandinavia, Europe

Snow storm approaching Alkefjelet, Cape Fanshawe, Spitsbergen, Svalbard, Norway, Scandinavia, Europe

Steep cliffs filled with nesting birds on the south side of Bjornoya (Bear Island), Svalbard, Norway, Scandinavia, Europe

Rocky beach at low tide with man fishing on rock, Argelles, France, Europe

The Azure Window natural arch, Dwerja Bay, Gozo Island, Malta, Mediterranean, Europe

Cross and lighthouse on Llanddwyn Island, Anglesey, Wales, United Kingdom, Europe

Steps leading down to Durdle Door on the Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Hartland Point Lighthouse and Lundy Island beneath a colourful sunset, North Devon, England, United Kingdom, Europe

Sea pink wildflowers flowering on the clifftops at Hartland Quay, looking towards Screda Point, Devon, England, United Kingdom, Europe

Winter sunrise above the Old Man of Storr on the Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Boscastle Harbour at sunset, Cornwall, England, United Kingdom, Europe

Bat's Head cliff on the Jurassic Coast, UNESCO World Heritage Site, Durdle Door, Dorset, England, United Kingdom, Europe

Twr Mawr lighthouse on Llanddwyn Island, Anglesey, Wales, United Kingdom, Europe

Basalt columns next to Fingal's Cave on the Isle of Staffa, with Mull in the background, Inner Hebrides, Scotland, United Kingdom, Europe

The Old Man of Storr, The Storr, Trotternish, Isle of Skye, Highlands, Inner Hebrides, Scotland, United Kingdom, Europe

View over South Anjuna Beach, Goa, India, Asia

View over South Anjuna Beach, Goa, India, Asia

View over South Anjuna Beach, Goa, India, Asia

Sandy beach at Reiff Bay with the Summer Isles in the background during moody winter sunset on the shores of northwest Scotland, Highland, Scotland, United Kingdom, Europe

Stone beach at Reiff Bay with the Summer Isles in the background during colourful sunset on the shores of northwest Scotland, Highland, Scotland, United Kingdom, Europe

Rocks and sandy beach at Reiff Bay with the Summer Isles in the background during colourful sunset on the shores of northwest Scotland, Highland, Scotland, United Kingdom, Europe

Overlooking rocky Reiff Bay at sunrise with the Summer Isles in the background, shores of northwest Scotland, Highland, Scotland, United Kingdom, Europe

Clifftop village of Riomaggiore, Cinque Terre, UNESCO World Heritage Site, Liguria, Italy, Europe

Dramatic coastal scenery in winter at Land's End in Cornwall, England, United Kingdom, Europe

A 20-25 year old young Brazilian woman standing on the Arpoador rocks with Ipanema and the Morro Dois Irmaos hills in the distance, Rio de Janeiro, Brazil, South America

Pink thrift flowers, Bedruthan Steps, Newquay, Cornwall, England, United Kingdom, Europe

Bedruthan Steps, Newquay, Cornwall, England, United Kingdom, Europe

Dawn illuminates the rocks shaped by wind surrounded by fresh snow, Uttakleiv, Lofoten Islands, Arctic, Norway, Scandinavia, Europe

A stormy coastal scene from Sango Bay, Durness, Sutherland, Scotland, United Kingdom, Europe