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
The bright orange garibaldi fish, California's state marine fish, is also clownlike in appearance.
Species: Garibaldi, Hypsypops rubicundus
Location: California
Image ID: 02416
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
Red gorgonian on rocky reef, below kelp forest, underwater. The red gorgonian is a filter-feeding temperate colonial species that lives on the rocky bottom at depths between 50 to 200 feet deep. Gorgonians are typically oriented at right angles to prevailing water currents to capture plankton drifting by.
Species: Red gorgonian, Leptogorgia chilensis, Lophogorgia chilensis
Location: San Clemente Island, California
Image ID: 38496
Huge California Sea Lion Male Underwater, a bull, patrolling his breeding harem and territory, Coronado Islands, Mexico. His sagittal crest, the bony bump on his head that distinguishes adult male sea lions, is clearly seen. This particular sea lion bears an orange tag on his left foreflipper, probably as a result of rescue and release as a young sea lion years earlier.
Species: California sea lion, Zalophus californianus
Location: Coronado Islands (Islas Coronado), Baja California, Mexico
Image ID: 38655
Mesa Arch spans 90 feet and stands at the edge of a mesa precipice thousands of feet above the Colorado River gorge. For a few moments at sunrise the underside of the arch glows dramatically red and orange.
Location: Island in the Sky, Canyonlands National Park, Utah
Image ID: 18040
Bryozoan grows on a red gorgonian on rocky reef, below kelp forest, underwater. The red gorgonian is a filter-feeding temperate colonial species that lives on the rocky bottom at depths between 50 to 200 feet deep. Gorgonians are oriented at right angles to prevailing water currents to capture plankton drifting by.
Species: Red gorgonian, Leptogorgia chilensis, Lophogorgia chilensis
Location: San Clemente Island, California
Image ID: 25395
Red gorgonian on rocky reef, below kelp forest, underwater. The red gorgonian is a filter-feeding temperate colonial species that lives on the rocky bottom at depths between 50 to 200 feet deep. Gorgonians are oriented at right angles to prevailing water currents to capture plankton drifting by.
Species: Red gorgonian, Leptogorgia chilensis, Lophogorgia chilensis
Location: San Clemente Island, California
Image ID: 25393
Plexauridae sea fan or gorgonian on coral reef. This gorgonian is a type of colonial alcyonacea soft coral that filters plankton from passing ocean currents.
Species: Gorgonian, Gorgonacea
Location: Bligh Waters, Fiji
Image ID: 34750
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