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A nudibranch during feeding in Gökova gulf in Turkey
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
Ardeadoris cf. averni Nudibranch
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.
Gabriela's Tambja, Dorid Nudibranch
Armina sp. Nudibranch. Sea slug
Colorful sea cucumber-like corals.
A colorful white gypsy nudibranch crawls across the sandy bottom at night.
The Sea Slug Halgerda batangas occurs in the tropical western Pacific, singly or in pairs on coral and rocky reefs amongst sand and rubble areas in 5 to 30 m depth, max. length 7 cm.  \nThe species feeds on hydroids, coral, sponges and anemones.  \nThis specimen was encountered in the Lembeh Strait, Indonesia\n1°27'15.486 N 125°13'25.578 E at 21m depth
Beautiful nudibranch making its way across healthy coral reef
Sea life, close up, macro   Beautiful Purple - hot pink and  yellow   Nudibranch. Underwater beauty Scuba diver point of view. Underwater photo. Underwater scene Underwater photography. Photographed with Nikonos V, 35mm lens Macro 1:1 (real size 24x36mm) on Fujichrome Velvia 50
Nudibranch on seaweed
Underwater photography of tropical reef  species in Papua New Guinea
Goniobranchus kuniei is a species of  sea slug, a dorid nudibranch, in the family Chromodorididae. Goniobranchus kuniei has a splash of dark spots turning to pale blue on a golden mantle. There is a double border to the mantle of purple and blue. The length of this seaslug can be up to 40 mm.
Gabriela's Tambja, Dorid Nudibranch
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°29'20.988 N 125°14'23.226 E at 17m depth
Two Mexichromis katalexis Nudibranchs. Ambon, Indonesia
Sea life Nudibranch Underwater beauty Scuba diver point of view
PG Island, Oriental Mindoro Province, Philippines - Close-up of marine life
Spanish dancer - sea slug in Red Sea near Marsa Alam by night, Egypt
Gabriela's Tambja, Dorid Nudibranch
Illuminated Blue striped nudibranch on coral reef against a dark background
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
Macro underwater photography in Anilao in the Philippines
Underwater photography beauty deep sea, red ascidiacea tunicate Halocynthia papillosa, yellow coral  orange sponge fish reef Sea life.   Scuba diver point of view
nudibranch sea snail mollusc
Fethiye, Turkey
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