Chris & Monique Fallows / Common dolphin (Dephinus delphis) porpoising, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Common dolphin (Dephinus delphis) porpoising, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Common dolphins (Dephinus delphis) swimming near surface, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Orca (Orcinus orca) pod hunting common dolphin (Delphinus delphis) False Bay, South Africa.

Chris & Monique Fallows / Common dolphin (Dephinus delphis) porpoising, False Bay, Cape Town, South Africa.

Floris van Breugel / Various fluorescent minerals : 1Willemite, New Jersey, 2: Willemite and Calcite, New Jersey, 3: Fluorite, Ohio, 4: Willemite and Calcite, New Jersey. 5: Fluorite, California. 6: Scheelite, California....

Richard Du Toit / Aerial view of herd of Common zebra (Equus quagga) Makgadikgadi salt pans, Botswana

Richard Du Toit / Aerial view of Common zebra {Equus quagga} crossing the Makgadikgadi salt pans, Botswana

Suzi Eszterhas / African elephant (Loxodonta africana) herd at waterhole during dry season with Springbok (Antidorcas marsupialis), Plains zebra (Equus quagga) and Warthog (Phacochoerus africanus). Etosha National Par...

Daniel Heuclin / Fabian's lizard (Liolaemus fabiani) basking on salt deposit. Salar de Atacama, Chile. September.

Mike Read / Black-winged stilt (Himantopus himantopus) juvenile in a salt lagoon Kiskunsag National Park near Tiszaalpar, Hungary, June.

Mike Read / Black-winged stilt (Himantopus himantopus) adult in a salt lagoon wing-stretching, Kiskunsag National Park, near Tiszaalpar, Hungary June.

Nick Upton / Small group of Wigeon (Anas Penelope) swimming preening and dabbling in a saltmarsh creek at high tide close to a flooded stand of Common cord grass (Spartina anglica), Somerset, England, UK, December...

Yva Momatiuk & John Eastcott / Ostrich (Struthio camelus) pair in salt pan, Etosha Pan, Etosha National Park, Namibia

Terry Whittaker / Curlew (Numenius arquata) roosting on saltmarsh, Cromarty Firth, Scotland, UK April

Terry Whittaker / Curlew (Numenius arquata) roosting on saltmarsh, Cromarty Firth, Scotland, UK April

David Woodfall / Common reed (Phragmities communis), Steart Marshes Wildfowl and Wetland Trust, Somerset, UK, February 2015. This area has been allowed to flood by the WWT and the Environment Agency to create new sal...

David Woodfall / Common reed (Phragmities communis), Steart Marshes Wildfowl and Wetland Trust, Somerset, UK, February 2015. This area has been allowed to flood by the WWT and the Environment Agency to create new sa...

Jean E. Roche / Marshes with salt cedar (Tamarix sp) and common reed (Phragmites australis), Camargue, France, February.

Nick Upton / Common sea lavender (Limonium vulgare) flowering on a saltmarsh, RSPB Arne, Dorset, July.

Nick Upton / Common sea lavender (Limonium vulgare) flowering beside a saltmarsh creek, RSPB Arne, Dorset, July.

Nick Upton / Common sea lavender (Limonium vulgare) flowering beside a saltmarsh creek bank, RSPB Arne, Dorset, July.

Nick Upton / Common sea lavender (Limonium vulgare) flowering beside a saltmarsh creek bank, RSPB Arne, Dorset, July.

Nick Upton / Common glasswort / Marsh samphire (Salicornia europeae) growing on a saltmarsh, RSPB Arne, Dorset, July.

Nick Upton / Common glasswort / Marsh samphire (Salicornia europeae) growing on a saltmarsh, RSPB Arne, Dorset, July.

Steve O. Taylor (GHF) / Rock salt from the north of Mali, for sale at Mopti market. Mali, 2005-2006.

Steve O. Taylor (GHF) / Rock salt from the north of Mali, for sale at Mopti market. Mali, 2005-2006.

Steve O. Taylor (GHF) / Salt diggers in Sigedene, northern Niger, 2005.

Zoltan Nagy / Common Pratincole (Glareola pratincola) among salt marsh vegetation, near the Danube Delta and the coastal lagoons. Vadu, Romania, June.

Zoltan Nagy / Common Pratincole (Glareola pratincola) among salt marsh vegetation, near the Danube Delta and the coastal lagoons. Vadu, Romania, May.

Zoltan Nagy / Common Pratincoles (Glareola pratincola) among salt marsh vegetation, near the Danube Delta and the coastal lagoons. Vadu, Romania, May.

Lou Coetzer / Four Burchell's / Plains zebras (Equus quagga / burchelli) walking through water filled Fisher's Pan, Etosha National Park, Namibia, June.

Ernie Janes / Curlew (Numenius arquata) walking on saltmarsh, Norfolk, UK, October.

Peter Cairns / Bottlenose dolphin (Tursiops truncatus) breaching in front of Fort George, Fortrose, Scotland, July.

Jean E. Roche / Reflections in water at mussel farm in the bay of Fos-sur-Mer, Camargue, France, September.

Jean E. Roche / Reflections in water at mussel farm in the bay of Fos-sur-Mer, Camargue, France, September.

Jean E. Roche / Reflections in water at mussel farm in the bay of Fos-sur-Mer, Camargue, France, September.

Chris & Monique Fallows / Common dolphins (Delphinus delphis), False Bay, Cape Town, South Africa, August.

Chris & Monique Fallows / Killer whale (Orcinus orca) hunting common dolphin (Delphinus delphis), False Bay, South Africa, July.

Chris & Monique Fallows / Common dolphin (Delphinus delphis), False Bay, Cape Town, South Africa, August.

Georgette Douwma / Day octopus (Octopus cyanea) Red Sea, Egypt.

Georgette Douwma / Day octopus (Octopus cyanea) Red Sea, Egypt.

Georgette Douwma / Common lionfish / Devil firefish (Pterois miles) being mobbed by Lyretail anthias / Goldies (Pseudanthias squamipinnis) Egypt, Red Sea. Endemic species.

Georgette Douwma / Common lionfish / Devil firefish (Pterois miles) Egypt, Red Sea, endemic species.

Georgette Douwma / Common lionfish / Devil firefish (Pterois miles) Egypt, Red Sea, endemic.

Georgette Douwma / Common lionfish / Devil firefish (Pterois miles) Egypt, Red Sea, endemic species.

Georgette Douwma / Common lionfish / Devil firefish (Pterois miles) Egypt, Red Sea, endemic species.

Loic Poidevin / Common Tern (Sterna hirundo) juvenile, Breton Marsh, France, August.

Loic Poidevin / Common Tern (Sterna hirundo) juvenile, Breton Marsh, France, August.

Loic Poidevin / Common Harbour Seal (Phoca vitulina) in sea, British Columbia, Canada, June.

Adrian Davies / Shag (Phalacrocorax aristotelis) on cliffs above the ocean, Mousa, Shetland, Scotland, May.

Adrian Davies / Shag (Phalacrocorax aristotelis) drying wings on cliffs above the ocean, Mousa, Shetland, Scotland, May.

MYN / Carsten Krieger / Common Limpet (Patella vulgata) from rock pool, County Clare, Republic of Ireland, August. Meetyourneighbours.net project

MYN / Carsten Krieger / Common Limpet (Patella vulgata) from rock pool, County Clare, Republic of Ireland, August. Meetyourneighbours.net project

MYN / Carsten Krieger / Common Limpet (Patella vulgata) from rock pool, County Clare, Republic of Ireland, August. Meetyourneighbours.net project

MYN / Carsten Krieger / Common Limpet (Patella vulgata) with Red Alga (Corallina sp) County Clare, Republic of Ireland, December. Meetyourneighbours.net project

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) on Common Limpet (Patella vulgata) from tide pool, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) on Common Limpet (Patella vulgata) from tide pool, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

Cheryl-Samantha Owen / Harbour seals (Phoca vitulina) on beach with gulls, Johnstone Strait, East coast, Vancouver Island, British Columbia, Canada, July.

Nick Upton / Egg masses of Common whelk (Buccinum undatum) washed up on high water mark alongside dried out Bladder wrack fronds (Fucus vesiculosus), Rhossili, The Gower peninsula, Wales, UK, June.

Nick Upton / Female Common spider crab (Maja brachydactyla / Maja squinado) standing on a boulder in a rockpool low on the shore, Rhossili, The Gower Peninsula, UK, June.

Nick Upton / Female Common spider crab (Maja brachydactyla / Maja squinado) well camouflaged in a rockpool among Coralweed (Corallina officinalis), Rhossili, The Gower Peninsula, UK, June.

Nick Upton / Recenty settled young Common mussels (Mytilus edulis) alongside barnacle encrusted adults on rocks exposed on a rocky shore at low tide, Rhossili, The Gower Peninsula, UK, June.

Nick Upton / Dog whelk (Nucella lapillus), a predator of barnacles, on rocks encrusted with Common barnacles / Northern rock barnacles (Semibalanus balanoides) exposed at low tide, with seaweed, a rock pool and th...

Nick Upton / An epizoic brown alga (Scytosiphon lomentaria) growing on a Common Limpet (Patella vulgata) in a rockpool, Polzeath, Cornwall, UK, April.

Nick Upton / Common mussels (Mytilus edulis) attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.

Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.

Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.

Nick Upton / Common mussels (Mytilus edulis), Dog Whelks (Nucella lapillus) and Common barnacles (Semibalanus balanoides) attached to rocks exposed at low tide, Rhossili, The Gower peninsula, Wales, UK, June.

Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.

Nick Upton / Common mussels (Mytilus edulis) attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.

Nick Upton / Male Common spider crab (Maja brachydactyla / Maja squinado) in defensive posture exposed on rocky shore on a very low spring tide, Rhossili, The Gower Peninsula, UK, June.

Nick Upton / Common limpets (Patella vulgata) and Acorn barnacles (Balanus perforatus) attached to rocks exposed at low tide, Lyme Regis, Dorset, UK, April.

Nick Upton / Patterns left by Common limpets (Patella vulgata) grazing on alga covered rocks with their scraping radulas, Kimmeridge, Dorset, UK, March.

Nick Upton / Patterns left by Common limpets (Patella vulgata) grazing on alga covered rocks with their scraping radulas, Kimmeridge, Dorset, UK, March.

Nick Upton / Patterns left by Common limpets (Patella vulgata) grazing on alga covered rocks with their scraping radulas, Kimmeridge, Dorset, UK, March.

Chris & Monique Fallows / Bronze whaler sharks (Carcharhinus brachyurus) feeding on sardines (Sardinops ocellata) East London, South Africa.

Chris & Monique Fallows / Common dolphin (Dephinus delphis) pod feeding on sardines (Sardinops oecllata) East London, South Africa.

Chris & Monique Fallows / Common dolphin (Dephinus delphis) and Cape Gannet (Morus capensis) feeding on bait fish, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Common dolphin (Dephinus delphis) pod feeding on Sardines (Sardinops oecllata) Port St Johns, Transkei, South Africa.

Chris & Monique Fallows / Mahi mahi (Coryphaena hippurus) portrait, Mozambique Channel, Indian Ocean

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Jeff Rotman / Close up of skin of a dolphinfish (Coryphaena hippuris). Cocos Island, Costa Rica, Pacific Ocean.

Alex Mustard / Starfish (Asterias rubens) below kelp in the typical scenery in Thorshofn Bay, north Iceland. North Atlantic Ocean.

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) reflected at the surface, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphins (Tursiops truncatus) at the surface, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) at the surface, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) mother and baby dolphin playing at the surface, Sado Estuary, Portugal

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

Pedro Narra / Bottlenose Dolphins (Tursiops truncatus) playing near beach, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) family swimming near the surface, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) baby swimming near to mother, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) baby swimming near to mother, Sado Estuary, Portugal

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) baby swimming near to mother, Sado Estuary, Portugal