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Morning Glory Pool, a geothermal pool, colours are due to algae at temperature bands, hotter below, Yellowstone National Park, Wyoming, USA
Featherstars perch on the edge of Gorgonian Sea Fans to feed in the current, Fiji, Pacific Ocean
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Nudibranch on coral, Papua New Guinea, Pacific
Hanson Bay, Kangaroo Island, South Australia, Australia, Pacific
Vibrant green algae exposed at low tide at Tregardock Beach, North Cornwall, England, United Kingdom, Europe
Algae covered rocks at Tregardock Beach, North Cornwall, England, United Kingdom, Europe
Seaweed washed up on Studland Bay shore at dawn, with Old Harry Rocks in the distance, Studland, Dorset, England, United Kingdom, Europe
Stone jetty in Swanage Harbour, Swanage, Dorset, England, United Kingdom, Europe
Quartz veins in the rock bed at Crackington Haven, Cornwall, England, United Kingdom, Europe
Bloody Beach Peleiu, Republic of Palau, Pacific
Saint Nazaire Cathedral and Pont Vieux (Old Bridge), Beziers, Herault, Languedoc-Roussillon, France, Europe
Scene around Blue Rocks in Lunenburg Harbour, Nova Scotia, Canada, North America
The shell of Hawaiian reef lobster (Enoplometopus occidentalis), covered in algae and parasitic barnacles, Hawaii, United States of America, Pacific, North America
A garibaldi (Hypsypops rubicundus) in a forest of giant kelp off Catalina Island, California, United States of America, North America
Waterfall near the Old Man of Storr on the Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Traditional sea salt production, Salinas de Janubio, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Saltwater (estuarine) crocodile (Crocodylus porosus), Sarawak, Borneo, Malaysia, Southeast Asia, Asia
Dusk over Penmon Point Lighthouse and Puffin Island, Isle of Anglesey, Wales, United Kingdom, Europe
Algae lined rockpools on the coast at Gasadalur on the island of Vagar, Faroe Islands, Denmark, Europe
An algae-clad stone groyne at Mudeford, Dorset, England, United Kingdom, Europe
Algae covered rocks at sunrise at Church Ope Cove, Portland, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe
Algae covered pebbles at Church Ope Cove at dawn Portland, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe
The rocky shore of West Weares on Portland, looking towards Chesil Beach, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe
Stair Hole near to Lulworth Cove, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe
Edible algae provides a pink hue to the Hutt Pink Lagoon, Port Gregory, Western Australia, Australia, Pacific
Edible algae provides a pink hue to the Hutt Pink Lagoon, Port Gregory, Western Australia, Australia, Pacific
Pool runoff of orange bacteria and algae (Therophiles), Grand Prismatic Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Southerness Lighthouse, Solway Coast, Dumfries and Galloway, Scotland, United Kingdom, Europe
Sabellaria alveolata honeycomb worm reef, Mimid beach, Sidi Boufdail, Mirleft, Morocco, North Africa, Africa
Roots of Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Castle Geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Algae coated rock pools at sunset on the basalt rock ledge seashore of Gjogv in the Faroe Islands, Denmark, Europe
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Kelp at Coast of Cedros, Macrocystis pyrifera, Cedros Island, Mexico
Beach at the coast, Kangaroo Island, South Australia, Australia
Small stream cascading over rocks in mountains of Kilauea, Kauai, Hawaii, United States of America, Pacific
Trees covered by orange trentepohlia, Waiotapu Thermal Area, Rotorua, North Island, New Zealand, Pacific
Pentire Point, Polzeath, Cornwall, England, UK
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Excelsior Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Sapphire Pool, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Tourists on boardwalk over the mineral runoff from Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Crested Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cap Frehel, Cotes d'Armor, Emerald Coast near St. Malo, Brittany, France, Europe
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Elegant lichens cover the rocks at Gnalodden, Hornsund, Spitsbergen, Svalbard, Arctic, Norway, Europe
Red algae, Komodo, Indonesia, Southeast Asia, Asia
Wooden boardwalk and cyanobacteria thermophile formations on Geyser Hill, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Kelp Forest Giant Kelp, Macrocystis pyrifera, San Benito Island, Mexico
Marine Mucilage in Ocean, Florida Islands, Solomon Islands
Marine Mucilage in Ocean, Florida Islands, Solomon Islands
Laguna Colorada on the Altiplano, Potosi Department, Bolivia, South America
Laguna Colorada on the Altiplano, Potosi Department, Bolivia, South America
Water rich in blue-green algae (cyanobacteria), mineral salts and fine silica mud at the geothermal spa that owes its existence to the Svartsengi geothermal power plant, Blue Lagoon, near Reykjavik, Iceland, Polar Regions
Water rich in blue-green algae (cyanobacteria), mineral salts and fine silica mud at the geothermal spa that owes its existence to the Svartsengi geothermal power plant, Blue Lagoon, near Reykjavik, Iceland, Polar Regions
Water rich in blue-green algae (cyanobacteria), mineral salts and fine silica mud at the geothermal spa that owes its existence to the Svartsengi geothermal power plant, Blue Lagoon, near Reykjavik, Iceland, Polar Regions
Algae inside rock formation on cliffs lit by rainbow during the midnight sun, Tungeneset, Senja, Troms county, Norway, Scandinavia, Europe
West Indian Top Shell (Cittarium pica) on a rock on the South Shore, Bermuda, at sunrise. A species of edible sea snail, they are herbivores and feed on algae.
West Indian Top Shell (Cittarium pica) on a rock on the South Shore, Bermuda, at sunrise. A species of edible sea snail, they are herbivores and feed on algae.
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Geyser erupting over sinter terrace, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on the boardwalk around the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Punta Cantor, Valdes Peninsula, Patagonia, Argentina, South America
A small red starfish clings to coralline algae in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
Vibrant sea cucumbers, tunicates, hydroids, and other invertebrates cling to a reef in Raja Ampat, Indonesia.
A blue starfish, Linkia laevigata, clings to coralline algae on a reef in Sulawesi, Indonesia.
A cute red-spotted blenny, Blenniella chrysospilos, looks out from its protective home on a coral reef in Indonesia. This combtooth blenny feeds on algae.
A thorny seahorse clings to an algae stock, Anilao, Philippines.
Aerial of San Antonio church, Island of Mozambique, UNESCO World Heritage Site, Mozambique, Africa
Whale bone on a beach, Baffin island, Nunavut, Canadian Arctic, Canada, North America
Algae on an ice block, Baffin island, Nunavut, Canadian Arctic, Canada, North America
Adult green sea turtle (Chelonia mydas agassizii) underwater off the west side of Isabela, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Sally lightfoot crab (Grapsus grapsus) in the littoral of the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Patterns in the kelp at low tide on South Georgia Island, Southern Ocean
Kelp forest with school of fish, Catalina Island, California.
Vibrant pink water lily blooming in a tranquil pond with green algae and lily pads, reflecting serene beauty in nature at Kew Gardens, London, England, United Kingdom, Europe
Four manatees congregate to feed on algae at Fanning Springs State Park, Florida.
A Sheepshead looks on as a pair of Blue Angelfish appear to be confused on which direction to go but each are feeding on different parts of coral and algae covered jetty rocks at St. Andrew Bay channel wall in Panama City Beach, Florida.
A Spotfin Butterflyfish (Chaetodon ocellatus) feeding off the coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Queen Parrotfish feeding on algae, Bonaire, Caribbean Netherlands.
Wulaia Bay, Navarino island, Tierra del Fuego, Patagonia, Chile, South America
Water vole (Arvicola terrestris) in captivity, United Kingdom, Europe
Lotus (Nelumbo nucifera) at the mouth of the Wadi Shab, canyon near Tiwi, Sultanate of Oman, Arabian Peninsula
Aerial view by drone of swirls of green algae in a freshwater lake, Roadford Lake, Devon, England, United Kingdom, Europe
Patterns in the kelp at low tide on New Island in the Falkland Islands
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Green sea turtle (Chelonia mydas), surfacing for air near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize
Soft corals and sponges underwater on Long Caye in the Mesoamerican Barrier Reef, Belize
Dead and dying pink salmon (Oncorhynchus gorbuscha) gathering after the spawn just outside of Sitka, Alaska, United States of America