ADAM HANLON PHOTOGRAPHY

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  • Greater blue ringed octopus (Hapalochlaena lunulata) flashes blue rings when it feels threatened. These tiny animals (about the size of a golf ball) pack a potentially life threatening venom.
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  • Close up stady of the rhinophores of a Marie's Mexichromis nudibranch. (Mexichromis mariei). These sensory organs provide a great deal of information about chemical and scents in the water as well as currents and water movements. Taken in the Lembeh Straits, Sulawesi, Indonesia.
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  • Close up of a nudibranch's rhinophore. These animals use these organs to detect chemicals in the water to effcetively find food and potential mates. They also sense water movements, giving the nudibranch information about its environment.
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  • Nudibranch means "naked gills". These animals have external organs that allow them to extratct oxygen from the water. This close up shows the brachial plume, or its lungs.
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  • It is obvious how the construction of this crested nembrotha"s (Nembrotha cristata) rhinophores have been designed in order to maximise their surface area. Like the cooling fins on a motornike engine, this increased surface area allows them to sample more water around them and hence obtian a better picture of their environment.
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  • Nudibranchs will often climb up bits of coral in order to use their extraordinary chemo receptor rhinophores to "taste" the water and sense food sources and threats.
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  • This is the brachial plume, or the gills of this nudibranch. As it lives underwater, it does not breathe in the same way that mammals do, but this organ allows it to extract oxygen from the water.
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  • Soft corals festoon the shallow part of the reef. As most corals can produce the bulk of their own food by photosynthesis, they can survive in areas that have little or no nutrients in the water. It also means that they need sunlight and hence clear water. Ths makes them an ideal underwater photography subject!
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  • A BSA M20 motorbike, provides a poignant reminder of both the futility of war and the ability of nature to heal. Now completely encrusted in coral, it was part of a cargo on the SS Thistlegorm, destined for the 8th Army in the Western desert. The bike (and lots of other fascinating cargo) has been on the sea bed at Sha'ab Ali, near Ras Mohammed, Egypt since 1941.
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  • Two Phyllidia marindica nudibranchs prepare to mate. These animals are widespread throughout the Indian and Pacific Oceans.
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  • A bus stop nudibranch (Goniobranchus hintuanensis) lifts its mantle or skirt as it negotiates the sea floor. These species were re classified with the help of DNA analyisis in 2012. Nudibrachs move with the help of a muscular foot, that has rythmic contractions along its length.
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  • There are still many species of nudibranch that are as yet undescribed by science. This animla rejoices in the name Nembrotha species 2 and is not yet properly taxonomically classified. The use of genetic sequencing has also created many new controversies, with many existing families and species being reclassified. This partcular specimen has tangled with something that has removed one rhinophore.
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  • The red on this Nembrotha kubaryana signal danger to any passing animla that thinks that it might be a good meal!
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  • This Marie's Mexichromis (Mexichromis mariei) is laying a trail or ribbon of eggs. Each species of nudibranch has a distinct pattern when it lays eggs and this allows biologists to identify which eggs belong to which animal.
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  • This Marie's Mexichromis (Mexichromis mariei) is laying a trail or ribbon of eggs. Each species of nudibranch has a distinct pattern when it lays eggs and this allows biologists to identify which eggs belong to which animal.
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  • The colors of this Flabellina rubrolineata warn other animals that it may give them a anasty surpise if they try to eat it. It can store the poison from the stinging cells of the animals it eats, and use it as aweapon in its defence.
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  • A Nembrotha purpureolineata feeds as it moves across the seabed. In common with many sea slugs, they are specialised eaters, only feeding on tunicates or sea squirts.
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  • A redline flabellina (Flabellina rubrolineata) strikes a pose. Taken in the Lembeh Straits, Sulawesi, Indonesia.
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  • Risbecia tryoni nudibranchs apparently nuzzle priot to mating. It is likely that they are actually using the chemical receptors on their rhinophores to sense the readiness of the other.
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  • A Nembrotha kubaryana nudibranch makes its way across an encrusting sponge. Taken in the Lembeh Straits, Sulawesi, Indonesia.
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  • A striated or "hairy" frogfish (Antennarius striatus) waves its esca or lure in an attempt to attract prey. Some think that the fish's "hairs", which are actually dermal spinules,  are designed to make them look like urchins. My experience is that they are not always found among urchins, so the "hairs" are simply a good way of breaking up the fish's outline for camouflage.
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  • A girdled Glossodoris (Glossodoris cincta) nudibranch makes its way across the sea bed. Nudinbranchs use muscular contractions of their mantles to undulate and allow them to move.
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  • Like a ship plowing its way across the ocean's surface, this many lobed ceratosoma (Ceratosoma tenue) moves across the sea bed.
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  • The vibrant colors of this Hypselodoris apolegma, attempt to warn other animals that it may not be so good to eat.
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  • A Yamasu's cuthona (Cuthona yamasui) makes its way across the sea bed
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  • A streaked Chromodoris (Chromodoris strigata) turns away from the camera. The rhinophores allow the animal to make sense of its environment and are complex sesnory organs. Taken in the Lembeh Straits, Sulawesi, Indonesia.
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  • A beautifully colored Dermatobranchus ornatus nudibranch moves across the corals of a reef in Indonesia.
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  • A clown frogfish  (Antennarius maculatus) makes its ponderous way across the sea bed. Frogfish move using their modified pectoral and pelvic fins to walk along the floor as this one is, not unlike a biped's walking gait  or they can make short "hops"  In the case of the latter, they move their pectoral fins simultaneously forward and back, transferring their weight to the pelvic fins while moving the pectorals forward.
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  • Although it looks like a fire breathing dragon, a tiny Gabriela's tambja (Tambja gabrielae) uses its rhinophores to evaluate its environment.
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  • Not all nudibranchs are brightly colored! This Rudman's phyllodesmium (Phyllodesmium rudmani ) has evolved to look like the polyps of the Xenia soft corals that it normally inhabits.
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  • Magnificent vibrant colors serve as a warning that this Hypselodoris apolegma nudibranch is likely to be an unpleasant meal for any would be predator.
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  • Portrait and detail of the "hairs" of a striated frogfish (Antennarius striatus). Lembeh Straits, North Sulawesi, Indonesia.
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  • Spotted porcelain crab (Neopetrolisthes maculatus) on its host anemone. It is adopting a defensive position, warding me off....
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  • Underwater Images
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  • Perfectly designed to seek and hunt its benthic prey, this great hammerhead's (Sphyrna mokarran) cephlafoil (or hammer) is packed full of amazing sensors. It's downward facing mounth allows it to strike as soon as the sensors find prey. Perhaps less obviously, hammerhaeds are amazingly maneouverable, allowing them to react in an instant to prey as they find it.
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