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PG Island, Oriental Mindoro Province, Philippines - Close-up of marine life
Underwater photo of acorn barnacle, Balanus glandula, with animal that lives inside shell filter feeding. Morro Bay, California, USA.
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Goldfish swimming in the water with a black background photographed in Chengdu
Underwater macro shot of green leaf nudibranch. Puerto Galera, Phillippines
Close up of a shark egg.
Little Leaf-sheep Nudibranch Costasiella kuroshimae
Sea anemone
Marine flatworm - Planaria, crawling on the glass, Black Sea
Big Blue Octopus Octopus cyanea  occurs in the tropical Indo-Pacific from eastern Africa to the Hawaiian Islands in a depth range from 0-150m, max. mantle length 22cm with arms to at least 80 cm. \nBig blue octopuses are found living in muddy, sandy, or rocky bottoms, and in seagrass beds. They create lairs or dens in crevices or coral rubbles within coral reefs. These dens aren't used for long term; on average individuals spend up to 35 days in one den. The average lifespan of big blue octopuses is 12 to 15 months.\nThis juvenile specimen was encountered in the Triton Bay, Indonesia \n3°54'41.052 S 134°7'18.204 E at 12m depth
Bubble algae Valonia ventricosa, surrounded by marine life, underwater Caribbean sea
Sea life worm Spiral tube worm Underwater beauty  Aquatic organism   Close up, macro photo. Scuba diver point of view
sea anemone and barnacles under water at low tide.
The giant California sea cucumber (Parastichopus californicus or Apostichopus californicus) is a sea cucumber that can be found from the Gulf of Alaska to Southern California. Monterey County, California.
A picture of some beautiful and colored nudibranches
Beetle
Underwater close-up photography of a dorid nudibranch.\nDivesite: Pulau Bangka (North Sulawesi/Indonesia)
Kulbickis Pipefish or New Caledonian Pipefish Festucalex kulbickii occurs in the tropical coastal reefs of the Western Central Pacific in Indonesia, Papua New Guinea and New Caledonia in a depth range from 2-56m, max. length of males 6.4cm, females 6.8cm. \nThe ovoviviparous species - males are brooding eggs and giving birth to live young - feeds on small crustaceans and occurs in different colors, white and red to brown. \nTriton Bay, Indonesia \n3°54'41.052 S 134°7'18.204 E at 15m depth
Hermodice carunculata
A hermit crab in the French Mediterranean Sea
The Green Melibe (Melibe viridis) is a fascinating sea slug known for its striking green coloration and unique feeding behavior. This animal uses its oral hood to capture small prey such as plankton, which it then ingests using a specialized feeding tube.
Earthworm in the dirt
Dreissena is a genus of small freshwater mussels in the family Dreissenidae in the class Bivalvia. They are found attached to firm substrates by threads from underneath the shells and are the only freshwater bivalves to attach to hard substrates in high densities while having a planktonic larval stage.
Profile view of a large brown Hemipteran on a purple flower blossom against a black background
A Bluefin gurnard fish (Chelidonichthys kumu) displaying colourful pectoral fins with a large black eye spot in the centre
Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.
Pyrosome with a fish hiding inside of it
Trombidium holosericeum Mite. Digitally Enhanced Photograph.
Bobbit worm
View of a fish in indoor aquarium.
Free Images: "bestof:Prognathodes aculeatus NOAA.jpg es Prognathodes aculeatus en el Santuario Nacional Marino de Flower Garden Banks EE UU 2013-09-06 11 30 08 http //flowergarden"
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