Grand Prismatic Spring (left) and Excelsior Geyser (right). Grand Prismatic Spring displays a stunning rainbow of colors created by species of thermophilac (heat-loving) bacteria that thrive in narrow temperature ranges. The blue water in the center is too hot to support any bacterial life, while the outer orange rings are the coolest water. Grand Prismatic Spring is the largest spring in the United States and the third-largest in the world. Midway Geyser Basin.
Location: Midway Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13571
Old Faithful geyser, sunrise. Reaching up to 185' in height and lasting up to 5 minutes, Old Faithful geyser is the most famous geyser in the world and the first geyser in Yellowstone to be named.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 26939
Anthias fishes school in strong currents over a Fijian coral reef, with various hard and soft corals, sea fans and anemones on display. Fiji.
Species: Anthias, Pseudanthias
Location: Fiji
Image ID: 34741
Parasitic zoanthid anemones cover, encrust and overwhelm a golden gorgonian. The gorgonian on the left has been completely parasitized by zoanthid anemones, while the gorgonian to the right remains free of zoanthids (for now). A garibaldi swims below the two sea fans. The golden gorgonian is a filter-feeding temperate colonial species that lives on the rocky bottom at depths between 50 to 200 feet deep. Each individual polyp is a distinct animal, together they secrete calcium that forms the structure of the colony. Gorgonians are oriented at right angles to prevailing water currents to capture plankton drifting by.
Species: California golden gorgonian, Luminescent parazoanthid, Zoanthid anemone, Giant kelp, Muricea californica, Parazoanthus lucificum, Savalia lucifica, Macrocystis pyrifera
Location: San Clemente Island, California
Image ID: 38493
Colorful and exotic coral reef in Fiji, with soft corals, hard corals, anthias fishes, anemones, and sea fan gorgonians.
Species: Anthias, Pseudanthias
Location: Fiji
Image ID: 34760
Vancouver Island hosts a profusion of spectacular anemones, on cold water reefs rich with invertebrate life. Browning Pass, Vancouver Island.
Location: British Columbia, Canada
Image ID: 35264