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Closeup of a  brightly colored Nudibranch crawling  on corals
Flabellina affinis, underwater shot.
The image shows a vibrant Solar powered nudi (Phyllodesmium longicirrum) crawling gracefully in the crystal-clear waters of a tropical coral reef. This stunning sea slug is known for its unique ability to derive energy from sunlight using symbiotic algae in its body. Its translucent body is adorned with beautiful patterns of blue, purple, and orange, making it a true underwater jewel.
Bullock's Hypselodoris Hypselodoris bullockii occurs widespread in the tropical Indo-West Pacifix, max. length 7cm. \nThis Sea Slug or dorid nudibranch has been mistaken for at least eight other species. \n\nThis specimen was encountered in the Lembeh Strait, Indonesia\n1°27'38.166 N 125°13'34.284 E at 18m depth
Sea Slug, Dorid Nudibranch, Crested Nembrotha, Nembrotha cristata, Coral Reef, Lembeh, North Sulawesi, Indonesia, Asia
Sea Life. Nudibranch is a member of Nudibranchia, a group of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage.  Very shallow DOF. Macro (close-up)
The Red Sea is home to a diverse array of marine life, including the striking nudibranchs, which are soft-bodied, brightly colored sea slugs. Known for their incredible array of colors and intricate patterns, nudibranchs are a favorite subject for underwater photographers and divers exploring the region’s coral reefs.\n\nNudibranchs are gastropods, but unlike snails, they lack a protective shell. Instead, they display vibrant hues ranging from brilliant oranges, pinks, and purples to electric blues and yellows. This vivid coloration often serves as a warning to predators of their toxicity or unpalatability, though some species are harmless.\n\nIn the Red Sea, nudibranchs can be found on the reefs, where they feed on sponges, algae, or other small invertebrates. Species like the Spanish dancer, known for its large size and flowing red body, and the blue dragon (Glaucus atlanticus), with its shimmering blue hues, are particularly popular with divers. These fascinating creatures are typically found in shallow waters but can also be spotted in deeper areas of the reef.\n\nThe Red Sea's clear, warm waters and healthy coral ecosystems provide an ideal environment for these colorful creatures, making it a prime location for diving and snorkeling enthusiasts eager to discover the vibrant world of nudibranchs.
Underwater photography of tropical reef  species in Papua New Guinea
A blue dorid nudibranch crawls over a reef in search for food.  Shot in the cold water of California's Channel Islands.
Colorful sea cucumber-like corals.
Ardeadoris cf. averni Nudibranch
Phyllodesmium longicirrum, the Long-cirri or Solar-powered Phyllodesmium occurs in the tropical Indo-West Pacific. The species is a very spectacular aeolid, which has evolved a symbiotic relationship with zooxanthellae. It is exceptionally large, often more than 12, max. 14cm long, and the cerata have evolved into large solar paddles to maximise the animal's ability to farm the plants in its body. It is known to feed on the soft-coral Sarcophyton. \nTwo specimens meet, the smaller at the left.\nLembeh Strait, Indonesia \n1°28'47.814 N 125°15'1.26 E at 14m depth
Sea Slug, Bullock's Hypselodoris, Hypselodoris bullocki, Dorid Nudibranch, Bunaken National Marine Park, Bunaken, North Sulawesi, Indonesia, Asia
Sea life Nudibranch Underwater beauty Scuba diver point of view
Closeup of a  brightly colored Nudibranch crawling  on corals
Phyllidia varicosa nidubranch under the sea in Koh Tao diving, Thailand
Gabriela's Tambja, Dorid Nudibranch
Eye level with Anna's Nudibranch (Chromodoris annae). Photographed in Lembeh Strait, Indonesia.
Costasiella usagi, also known as the rabbit sea slug, is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Costasiellidae. It is notable for its ability to incorporate chloroplasts from the algae it eats into its own tissues, allowing it to photosynthesize. This makes Costasiella usagi one of only a few animals known to be able to perform photosynthesis.\n\nCostasiella usagi is a small sea slug, typically measuring only a few millimeters in length. It has a translucent body with a white or cream-colored head and foot. The cerata, or \
The Nudibranch Tryon's Hypselodoris Hypselodoris tryoni (ex. Risbecia tryoni) occurs in the tropical Indo-Pacific Ocean from Tanzania to the Society Islands and Indonesia to Japan and the Philippines, max. length 10cm. This species, like all the members of the order Nudibranchia, are simultaneous hermaphrodites with this mating behavior: 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. \nThis specimen was encountered in the Lembeh Strait, Indonesia. \n1°27'39.69 N 125°14'33.342 E at 17m depth
under sea photo
Abstract. Sea life Nudibranch Underwater beauty Scuba diver point of view
Two blue and white nudibranch with orange flames in Bunaken, Sulawesi, Indonesia
Mandarinfish (Synchiropus picturatus)
Illuminated Blue striped nudibranch on coral reef against a dark background
Gabriela's Tambja, Dorid Nudibranch
Phyllodesmium longicirrum, commonly known as the Solar powered nudi, is a species of sea slug or nudibranch that has a unique symbiotic relationship with photosynthetic algae. It uses solar power to generate energy through the photosynthesis process in the algae. The nudibranch is characterized by its long and slender tentacles, which it uses to catch its prey and its colorful and intricate camouflage. It can be found in tropical waters, especially in coral reefs, and is a hermaphrodite, laying egg ribbons to reproduce. The species has a unique mantle that protects the algae and a radula to scrape food from surfaces. Its adaptation and evolution to use solar energy for sustenance make it a fascinating example of sustainability in marine life.
Lined Nembrotha Nembrotha lineolata occurs widespread in the tropical Indo-West Pacific, max. length 7cm. \nNembrotha lineolata has been observed feeding on tunicates. It can insert its extensible oral tube through the tunicate's siphon and suck out the soft interior.\nTriton Bay, Indonesia 3°54'15.606 S 134°6'47.136 E at 14m depth
Dive reefs around Hurghada, Egypt
Underwater photography beauty deep sea, red ascidiacea tunicate Halocynthia papillosa, yellow coral  orange sponge fish reef Sea life.   Scuba diver point of view
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