Juergen Freund / Bean shaped polyps of an Anchor coral (Euphyllia ancora), a large polyp stony (LPS) coral. Misool, Raja Ampat, West Papua, Indonesia.

Stephen Belcher / Anchor Island, Dusky Sound, Fjordland National Park, South Island, New Zealand

Merryn Thomas / "Enterprise III" ferry approaching Flushing harbour near Falmouth, Cornwall, UK

Philip Stephen / Anchor handling vessel "Sea Panther" on the North Sea, March 2010.

Doug Allan / Woman standing by bow and anchor of Russian nuclear icebreaker, "NS 50 Let Pobedy" 50 years of Victory, North Pole, July 2008

Philippe Clement / Anchor of the Amoco Cadiz oil tanker, wrecked in March 1978 at Portsall, Brittany, France, June 2009

Rick Tomlinson / SY "Adele"'s first mate, Mark Thirkettle, cleans the anchor just off Huahine Island, French Polynesia

Rick Tomlinson / SY "Adele" at anchor near Danco Island in the Errera Channel, Antarctica, January 2007 Non editorial uses must be cleared individually.

Merryn Thomas / "Enterprise III" ferry approaching Flushing harbour near Falmouth, Cornwall, UK

Onne van der Wal / Saint Barths Bucket Super Yacht Regatta, Caribbean, March 2009.

Billy Black / Sunsail Oceanis 423 at anchor in the BVI's, March 2006. Property Released.

Philippe Clement / Anchor of the Amoco Cadiz oil tanker, wrecked in March 1978 at Portsall. Brittany, France, September 2010.

Ernie Janes / Anchor and fishing boats on the shingle, Aldeburgh, Suffolk, UK

Nick Upton / Overview of Campomoro bay, a sheltered natural harbour, with several yachts and small motor boats at anchor. Southwest Corsica, France, June 2010.

Inaki Relanzon / Sunset over a bay with two sailing boats at anchor. East coast of Corsica, Mediterranean Sea, France, Europe, September 2005.

Tim Laman / Crew relaxing on the stern of ship Shakti on a GEO Expedition at anchor in Triton Bay. West Papua, Indonesia, April 2007

Tim Laman / National Geographic ship, Endeavour, at anchor in Hatiheu Bay, Nuku Hiva, Marquesas Islands, French Polynesia, July 2006

Sue Flood / Cameraman Doug Allan, sitting on anchor of Russian nuclear icebreaker, NS 50 Lyet Pobyedi (50 years of Victory) en route to the North Pole, July 2008

Jeff Rotman / Fishing dhows at anchor off coast of Vilankulo, Mozambique, November 2008

Juan Carlos Munoz / Two fishing trawlers at anchor in Walvis Bay, Namibia, Africa

Michael Pitts / Diver with large anchor off the south coast, UK. September 2009.

Michael Pitts / Diver at 30 meters, with an unknown anchor off the south coast, UK. September 2009.

Rob Cousins / Rusting anchor of ship, Bristol Floating Harbour, UK

Francis Abbott / A scuba diving live-aboard boat at anchor off the Similan islands, off SW coast of Thailand, Andaman Sea.

Robert Valentic / Green tree python {Morelia / Chondopython viridis} hatchling uses its tail as an anchor point, Iron range, Queensland, Australia

Yva Momatiuk & John Eastcott / Small sailboat at anchor in bay, western Antarctica

Ingo Arndt / Fixing anchor from German icebreaker Polar Stern, on ice floe, Ispol expedition, Weddell Sea, Antarctica

Willem Kolvoort / Brackish water polyp (Cordylophora caspia / lacustris) growing on an anchor rope, Holland

Solvin Zankl / White lace flower seed (Orlaya grandiflora) Europe. Brsitles on the seeds anchor them in mammal fur and act as a predator defence.

Solvin Zankl / White lace flower seed (Orlaya grandiflora) Europe. Brsitles on the seeds anchor them in mammal fur and act as a predator defence.

Juergen Freund / Anchor chain lying across coral reef, Bahamas.

Dan Burton / Ship's anchor damaging coral reef at one metre depth. Red Sea

Norbert Wu / Sea Spider (Colossendeis megalonyx) on anchor ice, Antarctica

Norbert Wu / Sea Star (Odontaster validus) group, urchins, and Bootlace Worms (Nemertea) under anchor ice which forms in water less that 33 meters deep, Antarctica

Norbert Wu / Kelp (Macrocystis pyrifera) root-like stipes anchor young Kelp plant to bottom, contains communities of life, California

Norbert Wu / Diver exploring anchor ice and brine channels underwater, sea ice, Antarctica

Norbert Wu / Tyron's Risbecia (Risbecia tryoni) on anchor ice, Antarctica

Norbert Wu / Anchor ice forms in water less than 33 meters in depth, provides habitat for mobile animals such as Sea Stars, Sea Urchins, and Nemertean or Proboscis Worms, Antarctica

Norbert Wu / Giant Antarctic Isopod (Glyptonotus antarcticus) in newly formed anchor ice, and Sea Stars (Odontaster validus), Antarctica

Norbert Wu / Sea Star (Odontaster validus) and Sea Spider (Pycnogonidae) amid anchor ice, Antarctica

Norbert Wu / Sea Star (Homaxinella balfourensis) that is covered in anchor ice, Antarctica

Norbert Wu / Sea Star (Homaxinella balfourensis) covered in anchor ice, anchor ice forms in water less than 33 meters in depth, Antarctica

Norbert Wu / Giant Antarctic Isopod (Glyptonotus antarcticus) in newly formed anchor ice, and Sea Stars (Odontaster validus), Antarctica

Constantinos Petrinos / Tassled scorpionfish {Scorpaenopsis oxycephala} on anchor chain, Fiji

Sue Daly / Coral reef reduced to rubble by dive boat anchors and divers Small Gifton, Egypt, Red Sea

Onne van der Wal / Hinckley Picnic motorboat anchor in storage locker.

Onne van der Wal / A fisherman's anchor lying in the sand, South Island, New Zealand.

Onne van der Wal / A fisherman's anchor lying in the sand, South Island, New Zealand.

Onne van der Wal / A fisherman's anchor lying in the sand, South Island, New Zealand.

Onne van der Wal / A CQR anchor lying on the grassy seabed, Bahamas.

Onne van der Wal / Antigua harbor and island with yachts at docks and at anchor.

Onne van der Wal / Brown pelican (Pelecanus occidentalis) on a post with two Moorings catamarans at anchor in the Sapodilla Cays, Belize.

Onne van der Wal / Anchor chain lying along a grass and sand seabed in clear water.

Onne van der Wal / 88ft sloop "Shaman" at anchor in a foggy Kodiak Island inlet, Alaska. 2001. Property Released.

Onne van der Wal / Young family at anchor aboard a cruising yacht, Rhode Island. Children peering over the stern into the water.

Onne van der Wal / The 88ft Sloop yacht "Shaman", at anchor in Cobbler's Cove, South Georgia.

Onne van der Wal / Brown pelicans (Pelecanus occidentalis) and a Moorings catamaran at anchor in the Sapodilla Cays, Belize.

Onne van der Wal / Brown pelicans (Pelecanus occidentalis) and two Moorings catamarans at anchor in the Sapodilla Cays, Belize.

Rick Tomlinson / People sit on rocks with a picnic whilst their boats are at anchor.

Rick Tomlinson / IF Folkboat at anchor at night in the Swedish West Coast Archipelago, between Marstrand and Gullholmen.

Rick Tomlinson / Cowes High Street during Skandia Cowes Week. People walk past the Anchor Inn.

Rick Tomlinson / Hallberg Rassy at anchor, Swedish Archipelago.

Rick Tomlinson / Hallberg Rassy lies at anchor at sunset in the Swedish Archipelago.

Rick Tomlinson / Anchor on sandy sea floor

Rick Tomlinson / Girls jumping into water off rocks in front of two yachts at anchor.

Angelo Giampiccolo / Diver exploring an anchor's winch on the prow's deck on wreck of the SS Thistlegorm, located in the Straits of Gubal, Northern Red Sea. Sunk by German bomber planes in World War II ^^^and has lain at...

Rick Tomlinson / Swan ketch at anchor inside Horsehoe Reef in the Carribean's Tobago Cays.

Rick Tomlinson / Swan ketch lies at anchor inside the horseshoe reef in Tobago Cays, Caribbean.

Rick Tomlinson / Lobster and beer on shore awaiting consupmtion, in the background are two yachts at anchor.

Rick Tomlinson / First mate Mark Thrikettle cleaning the anchor of "Adele" during cruise off coast of Huahine, French Polyenisia.

Rick Tomlinson / 180ft Superyacht "Adele" raising its anchor in Swedish waters during her maiden voyage in 2005. Non editorial uses must be cleared individually.

Rick Tomlinson / Hallberg Rassy at anchor, Swedish Archipelago.

Rick Tomlinson / Swedish motoryacht Stockholm at anchor in Spitsbergen.

Rick Tomlinson / Cruising yachts anchor off the island of Mayreau near Tobago Cays in the Grenadines, Caribbean.

Onne van der Wal / Bow view of Cunard's cruise liner the "Queen Elizabeth II" (QEII), at anchor.

Onne van der Wal / Underwater view of the bow and anchor chain of a cruising yacht.

Onne van der Wal / The anchor ball is raised as the anchor is being dropped in a fjord, Spitsbergen, Svalbard, Norway, 1998.

Onne van der Wal / Cruising yacht at anchor, the Bahamas. Property Released.

Onne van der Wal / Underwater view of the bow and anchor chain of a cruising yacht.

Onne van der Wal / Cruise ship at anchor off Newport's Rose Island lighthouse, Rhode Island, USA.

Onne van der Wal / The yacht "Shaman" at anchor in Cobbler's Cove, South Georgia Island.

Onne van der Wal / Anchor on the sandy seabed buried in sand.

Onne van der Wal / Anchor chain lying on a sandy seabed in clear water.

Onne van der Wal / A single yacht lying at anchor off a small island at sunset, Belize.

Onne van der Wal / The yacht "Shaman" at anchor in Cobbler's Cove, South Georgia Island.

Onne van der Wal / 140ft Frers ketch "Rebecca" at anchor off Antigua, Caribbean.

Onne van der Wal / Anchor windlass in the deck locker of teak decked 140ft superyacht "Rebecca".

Onne van der Wal / Using a suction handle, the crew of a yacht scrubbing the waterline at anchor.

Onne van der Wal / 172ft superyacht "Liberty" built by Perini Navi, at anchor in the Caribbean.

Onne van der Wal / A member of the crew on a commercial ship letting down the anchor using the ship's windlass.

Onne van der Wal / Setting the anchor in Abacos, Bahamas.

Onne van der Wal / Anchor chain underwater.

Onne van der Wal / Anchor chain stretching into the blue sea

Marc Robillard / Fishing boat anchored near Paimpol, Brittany, France.

Marc Robillard / Rusty hull and anchor of a wreck reflected in water. Galway, Ireland.

Onne van der Wal / An underwater view of an anchor in a seagrass bed in the Abacos Islands, Bahamas, Caribbean.