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Glaucus atlanticus Forster, 1777
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
Detail of small tunicates colonizing a coral reef in Komodo National Park, Indonesia. Tunicates filter organic material from the ocean, improving water quality.
The peacock flounder (Bothus mancus), also known as the flowery flounder, is a species of fish in the family Bothidae (lefteye flounders). The species is found widely in relatively shallow waters in the Indo-Pacific, also ranging into warmer parts of the east Pacific. Maui Island,
PG Island, Oriental Mindoro Province, Philippines - Close-up of marine life
Gabriela's Tambja, Dorid Nudibranch
Phyllidia ocellata is a species of nudibranch that can be found in the tropical waters of the Indo-Pacific region. These striking creatures are characterized by their flattened bodies and bright coloration, featuring a black background with large white spots outlined in orange. They also have a series of raised tubercles on their backs, giving them a rough and bumpy texture. These nudibranchs are often found in shallow waters, where they feed on sponges and other small invertebrates.
Freshwater clam filter feeder
Sea Fan, Sea Whips, Gorgonian, Reef Building Corals, Coral Reef, Lembeh, North Sulawesi, Indonesia, Asia
Toad eggs
Several Mytilus edulis growing on stone on the beach on the coast
Giant clam - Tridacna maxima  Underwater Sea life  Coral reef  Underwater photo Scuba Diver Point of View Red sea
A tiny Emperor Shrimp living together with a nudibranch Mexichromis multituberculata. Underwater macro world.
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
Tonicella lineata is a very colorful species of chiton from the North Pacific.
Flamingo Tongue (Cyphoma gibbosum) against dark background, off coast of Roatan Honduras
Millions of Golden jellyfish, Mastigias papua etpisonii, swim in Palau's famous Jellyfish Lake. The jellyfish population grows with cooler water temperature and falls with warmer temperatures.
Anthopleura xanthogrammica, or the giant green anemone, is a species of intertidal sea anemone of the family Actiniidae. Other  names for this anemone include green surf anemone, giant green sea anemone, green anemone, giant tidepool anemone, anemone, and rough anemone.  Salt Point State Park, California.
Haminoea is a genus of medium-sized sea snails or bubble snails, marine opisthobranch gastropod molluscs in the family Haminoeidae, the haminoea bubble snails, part of the clade Cephalaspidea, the headshield slugs and bubble snails.
Tropical aquarium, tropical waters sea anemone macro close up tentacles
Pair of flamingo tongue cowries on sea fan
The dorid nudibranch Goniobranchus coi (former Chromodoris coi) occurs in the tropical Western Pacific. This specimen might be 4cm long. Kri Island, Raja Ampat, West Papua, Indonesia, 0°33'18\
Group of  upside down jellyfish, Cassiopea Andromeda in marine aquarium pool. Theriology, biodiversity, undersea life, aquatic organism
Giant clam - Tridacna maxima  Underwater Sea life  Coral reef  Underwater photo Scuba Diver Point of View Red sea
A vibrant nudibranch, Chromodoris magnifica, crawls slowly across a shallow coral reef in Komodo National Park, Indonesia. Nudibranchs are colorful as a warning to predators that they are toxic.
Wide angle coral reef scenes with fish
The amazing and mysterious underwater world of the Philippines, Luzon Island, Anilаo
Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.
Beautiful live shell on the bottom of the red sea . Egypt
Celestial Phyllidia Phyllidia coelestis occurs in the tropical Indo-West Pacific from South Africa to the South China Sea and Australia to Fiji and from Philippines to Vanuatu, max. length 6cm. The species has the mating behavior of the members of the order Nudibranchia; they are simultaneous hermaphrodites: both individuals darts their penis toward each other to induce one to act as a male and the other as the female. The victorious one to penetrate the body wall is the dominant male. That's how simultaneous hermaphroditism works. \nTriton Bay, Indonesia \n3°54'41.0503 S 134°7'18.2052 E at 12m depth
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