Alex Mustard / Portrait of a male short snouted seahorse (Hippocampus hippocampus) in sea oak seaweed (Halidrys siliquosa). Devon, England, United Kingdom. British Isles. English Channel. North East Atlantic Ocean.

Alex Mustard / A close up of a blue shark (Prionace glauca) as it investigates the camera beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue sharks (Prionace glauca) cruise beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August. Winner of the Coast and Marine category...

Alex Mustard / Blue shark (Prionace glauca) near the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August. Digitally manipulated to improve composition see 1...

Alex Mustard / Blue shark (Prionace glauca) swimming near the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August. Highly commended in the Portraits category...

Alex Mustard / Blue shark (Prionace glauca) as it cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Sue Daly / Lightbulb seasquirts / tunicates (Clavelina lepadiformis) cluster on rock, Channel Isles, UK, July

Sue Daly / Yellow cave coral {Leptosammia pruvoti} off Sark, Channel Isles, UK

Sue Daly / Yellow cave coral {Leptosammia pruvoti} off Sark, Channel Isles, UK

Sue Daly / Lugworm cast {Arenicola marina} Jersey, Channel Isles, UK

Sue Daly / Warty coral {Eunicella verrucosa} Sark, Channel Isles, UK

Alex Mustard / Foam on the surface of the ocean, probably caused by a algal bloom (Phaeocystis globosa) Lands End, Cornwall, England, United Kindom. British Isles. North East Atlantic Ocean

SCOTLAND: The Big Picture / Tidal channel flowing into Talisker Bay, Isle of Skye, Inner Hebrides, Scotland, UK, October 2012.

SCOTLAND: The Big Picture / Tidal channels at dawn, Luskentyre, West Harris, Outer Hebrides, Scotland, UK, March 2015.

Alex Mustard / Lesser spotted catshark (Scyliorhinus canicula) resting on the seabed in channel between two islands. Shetland Islands, Scotland, British Isles, July. North East Atlantic Ocean.

Alex Mustard / Sunfish (Mola mola) basking at the surface on summer's day. Penzance, Cornwall, England, British Isles, August. North East Atlantic Ocean.

Alex Mustard / Blue shark (Prionace glauca) near the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August. Winner of British Nature in Black and White catego...

Alex Mustard / Blue shark (Prionace glauca) near the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August. Original version of 1439257.

Alex Mustard / Blue shark (Prionace glauca) near the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue shark (Prionace glauca) cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue shark (Prionace glauca) near the surface of the English Channel, showing the large eye. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue shark (Prionace glauca) portrait beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue shark (Prionace glauca) cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / A pair of blue sharks (Prionace glauca) are revealed below the surface of the sea, as a camera is dipped through the surface. Penzance, Cornwall, England, British Isles. English Channel, North East At...

Mark Payne-Gill / Grey seals (Halichoerus grypus) basking on rocks, Isles of Scilly, September

Sue Daly / Les Autelets rocks with rocky coast in foreground, Sark, Channel Isles, UK, 2009

Sue Daly / Les Autelets rocks with rocky coast in foreground, Sark, Channel Isles, UK, 2009

Sue Daly / Winter sunset over the sea, Sark, Channel Isles, UK, December 2008

Sue Daly / Coastal view through a Window in the Rock, Sark, Channel Isles, UK, 2009

Sue Daly / Primroses (Primula vulgaris) flowering on Gouliot Headland, Sark, Channel Isles, UK, spring 2009

Sue Daly / Coastal landscape, West coast of Sark, Channel Isles, UK, 2009

Sue Daly / Port du Moulin, a natural rock arch, Sark, Channel Isles, UK, 2009

Sue Daly / Port du Moulin, a natural rock arch, Sark, Channel Isles, UK, 2009

Sue Daly / Venus Pool, Sark, Channel Isles, UK, 2009

Sue Daly / Inside the Gouliot Caves, Sark, Channel Isles, UK, 2009

Sue Daly / Inside the Gouliot Caves, Sark, Channel Isles, UK, 2009

Sue Daly / Coastal landscape with gorse and a rusty old piece of metal machinery in the foreground, West coast of Sark, Channel Isles, UK, summer 2009

Sue Daly / Man exploring the Boutique Caves, Sark, Channel Isles, UK, 2009

Sue Daly / Bluebells and Wild garlic flowering beside footpath in Dixcart Wood, Sark, Channel Isles, UK, spring 2009

Sue Daly / Bluebells flowering in Dixcart Wood, Sark, Channel Isles, UK, spring 2009

Sue Daly / Bec du Nez, the most northern promontory of Sark, with Sea thrift flowering in the foreground, Sark, Channel Isles, UK, Summer 2009

Sue Daly / Bec du Nez, the most northern promontory of Sark, with Sea thrift flowering in the foreground, Sark, Channel Isles, UK, Summer 2009

Sue Daly / West Coast of Sark, Channel Isles, UK, 2009

Sue Daly / West Coast of Sark, Channel Isles, UK, 2009

Sue Daly / Boats moored in the natural harbour of Les Laches, Sark, Channel Isles, UK, Summer 2009

Sue Daly / Boats moored in the natural harbour of Les Laches, Sark, Channel Isles, UK, Summer 2009

Sue Daly / Red Campion (Silene dioica) flowering beside path to Harbour Hill, Sark,Channel Isles, UK, Summer 2009

Sue Daly / Boats moored in the natural harbour of Harve Gosselin, Sark, Channel Isles, UK, Summer 2009

Sue Daly / Boats moored in the natural harbour of Harve Gosselin, Sark, Channel Isles, UK, Summer 2009

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

Sue Daly / Horse drawn carriage passing along the road on La Coupee, the ridged isthmus joining the main island of Sark to Little Sark, Sark, Channel Isles, UK, 2009

Sue Daly / La Coupee, ridged isthmus joining the main island of Sark to Little Sark, Sark, Channel Isles, UK, 2009

Sue Daly / Cuckoo wrasse (Labrus mixtus) male, Channel Isles, UK, June

Sue Daly / Marbled electric ray (Torpedo mamorata) on seabed, Channel Isles, UK, June

Sue Daly / Tompot blenny (Blennius / Parablennius gattorugine) Channel Isles, UK, July

Sue Daly / Leopard-spotted goby (Thorogobius ephippiatus) Channel Isles, UK, July

Sue Daly / Cuckoo wrasse (Labrus mixtus) transitional stage between female and male, beside corals, Channel Isles, UK, August

Sue Daly / Close up of head of Starry smooth-hound shark (Mustelus asterias) resting on seabed, Channel Isles, UK

Sue Daly / Starry smooth-hound shark (Mustelus asterias) resting on seabed, Channel Isles, UK

Sue Daly / Black faced blenny (Tripterygion delaisi) resting on rock, Channel Isles, UK, August

Sue Daly / Black faced blenny (Tripterygion delaisi) resting on rock, Channel Isles, UK, August

Sue Daly / Dogfish egg case / Mermaid's purse (Scyliorhinus sp) on fan coral, Channel Isles, UK, August

Sue Daly / Lightbulb seasquirts / tunicates (Clavelina lepadiformis) cluster on rock, Channel Isles, UK, July

Sue Daly / Goose foot starfish (Anseropoda placenta) on seabed, Channel Isles, UK, July

Sue Daly / Spiny starfish (Marthasterias glacialis) underwater, Channel Isles, UK, June

Sue Daly / Bloody Henry starfish (Henricia oculata) underwater, Channel Isles, UK, July

Sue Daly / Crevice sea cucumber (Aslia lefevrei) in rock crevice, Channel Isles, UK, April

Sue Daly / Edible crab (Cancer pagurus) underwater, looking up, Channel Isles, UK, June

Sue Daly / Sea slater / Beach woodlouse (Ligia oceanica) on rock, Channel Isles, UK, September

Sue Daly / Mint sauce worm (Symsagittifera roscoffensis) Channel Isles, UK, August

Sue Daly / Giant scallop (Pecten maximus) on seabed, feeding, showing mantle, Channel Isles, UK, June

Sue Daly / Eggs of Common squid (Loligo vulgaris) under rock crevice, Channel Isles, UK, April

Sue Daly / Bluefire jellyfish (Cyanea lamarckii) Channel Isles, UK, June

Sue Daly / Bluefire jellyfish (Cyanea lamarckii) with fish caught in tentacles, Channel Isles, UK, June

Sue Daly / Herringbone hydroid (Halecium halecinum) Channel Isles, UK, June

Sue Daly / Oatenpipe hydroids (Tubularia indivisa) underwater, Channel Isles, UK, June

Sue Daly / Pink sea fan coral (Eunicella verrucosa) Channel Isles, UK, June

Sue Daly / Elegant anemones (Sagartia elegans variety venusta) group underwater with tentacles exposed, Channel Isles, UK, June

Sue Daly / Beadlet anemone (Actinia equina) underwater with tentacles exposed, Channel Isles, UK, June

Sue Daly / Beadlet anemones (Actinia equina) group underwater showing colour variation, Channel Isles, UK, June

Sue Daly / Beadlet anemone (Actinia equina) underwater with tentacles partially exposed, Channel Isles, UK, June

Sue Daly / Beadlet anemone (Actinia equina) underwater with tentacles exposed, Channel Isles, UK, June

Sue Daly / Jewel anemones (Corynactis virids) underwater, Channel Isles, UK, June

Sue Daly / Yellow encrusting / cluster anemone (Parazoanthus axinellae) group with tentacles exposed underwater, Channel Isles, UK, June

Sue Daly / Snakelocks anemone (Anemonia viridis) underwater, with tentacles exposed, Channel Isles, UK, June

Sue Daly / Elephant hide sponge (Pachymatisma johnstonia) underwater, Channel Isles, UK, June

Sue Daly / Yellow hedgehog sponge (Polymastia boletiformis) underwater, Channel Isles, UK, June

Sue Daly / Golf ball sponge (Tethya citrina) underwater, Channel Isles, UK, July

Sue Daly / Kelp (Laminaria sp) with shoal of small fish, Channel Isles, UK, June

Merryn Thomas / Sunshine through clouds over Tresco Channel, towards Bryher, with the Firethorn moored off Anneka's Quay. Isles of Scilly, December 2008.