RM2HT5CXF–Giant manta (Manta birostris), with sucker fish or remoras. Pacific Ocean, west coast of Mexico
RM2HT597M–Great white shark (Carcharodon carcharias), male, about 5 m long. Neptune Island, South Australia
RM2HT5JCY–Magnificent sea anemone (Heteractis magnifica), with symbiotic Pink anemonefish (Amphiprion perideraion). The anemone can grow to a metre across.
RM2HT5AXH–Egg cowrie (Ovula ovum), with protective black mantle extended and covering its entire white shell, feeding on soft coral. It can retract the mantle q
RM2HT5DHB–Eelgrass (Zostera capricorni). Seagrasses are the only flowering plants that can live underwater. Seagrass beds provide food and shelter for a wide ra
RM2HT5DH0–Harlequin sweetlips (Plectorhinchus chaetodonoides), among other reef fish and Acropora corals. Great Barrier Reef, Queensland, Australia
RM2HT5GAB–Costellate egg cowry (Ovula costellata), feeding on soft coral. North Solitary Islands, New South Wales, Australia
RM2HT5GMX–Long-spine porcupinefish (Diodon holocanthus), hovering at cleaning station. North Solitary Islands, New South Wales, Australia
RM2HT5FBC–Hard coral (Paraclavarina triangularis), large outcrop with hovering diver. Great Barrier Reef, Queensland, Australia
RM2HT5FYC–Entoprocts (Phylum: Entoprocta) usually found attached to invertebrates such as sponges. Temperate South Pacific
RM2HT5EBW–Greenfish (Stichopus chloronotus), male, spawning Indonesia
RM2HT5EYP–Purple urchin shrimp (Stegopontonia commensalis), lives in sea urchin spines that give it protection and food - often found on Diadema sea urchins b
RM2HT5B4P–Peacock mantis shrimp (Odontodactylus scyllarus), can jab its prey at 80 km/h, the fastest of any animal Ambon, Indonesia
RM2HT58R1–Mohawk shrimp (Rhynchocinetes sp.), common name deriving from vertical spine on its back. Ambon, Indonesia
RM2HT58FM–Doughboy scallops (Mimachlamys asperrima), covered in orange commensal sponge, attached to a larger King scallop (Pecten meridionalis). Jervis Bay,
RM2HT5899–Turkey moray (Gymnothorax meleagris), in crevice in reef. Vanuatu
RM2HT5687–Scorpionfish (Scorpaenopsis sp.), camouflaged on reef. Vanuatu
RM2HT5D9E–Harlequin sweetlips (Plectorhinchus chaetodonoides) and Batfish (Platax teira).
RM2HT57XW–Large brown sea anemone Stichodactyla mertensii Manado, Indonesia
RM2HT576F–Phyllidia nudibranch (Phyllidia varicosa). Manado, Indonesia
RM2HT57BA–Christmas tree worms (Spirobranchus giganteus), showing green ‘trap door’ or operculum. Manado, Indonesia
RM2HT57GJ–Barrel sponges (Xestospongia sp.), group of large sponges, crowned with Feather stars.
RM2HT57DM–Tubular solitary hydroid or hydrocoral (Tubularia sp.), showing internal structures. Photograph taken at night. Manado, Indonesia
RM2HT56N6–Bluestriped fangblenny (Plagiotremus rhinorhynchos), Manado, Indonesia
RM2HT55BH–Grape weed (Caulerpa racemosa), edible green algae. Has invasive properties and has spread widely in the Mediterranean since the early 1990s.
RM2HT5598–Wall of zoanthids, large carpet on a reef crest. Norfolk Island
RM2HT56GT–Orange sea cucumber (Cucumaria miniata). Has fifteen sets of arms for feeding ending in bushy tentacles. Length with extended tentacles can be 25 cm.
RM2HT56X1–Cardinalfish (Rhabdamia sp.), large school, hovering in a protective grotto. Manado, Indonesia
RM2HT5656–A featherstar (Crinoidea), also called sea lilies or crinoids. Vila, Vanuatu
RM2HT56P0–Razorfish (Aeoliscus strigatus), habitually swim vertically, nose down, in a synchronised group. About 15 cm long. Manado, Indonesia
RM2HT5BFN–Chevron barracuda (Sphyrnaena putnamiae) school Papua New Guinea
RM2HT5HK8–Halimeda green algae (Halimeda cuneata). A large amount of almost white sand is associated with coral reefs, some being produced by Halimeda algae.
RM2HT5GYG–Zoanthid colony Palythoa tuberculosa Close up of a colonial cnidarian with stinging cells in its tentacles. Some species of this genera contain the st
RM2HT5HH3–Slipper lobster. Arctides antipodarum.This species hides during the day and comes out at night to hunt.Solitary Islands Marine Park, New South Wales
RM2HT5HH2–Slipper lobster. Arctides antipodarum.This species hides during the day and comes out at night to hunt. Solitary Islands Marine Park, New South Wales
RM2HT5H5A–Eastern blue devil fish Paraplesiops bleekeri About 20 blue devil species are known worldwide with a large proportion restricted to southern Australia
RM2HT5EDP–Banded sea krait (Laticauda sp.) Ambon, Indonesia
RM2HT5DK1–Anglerfish (fam. Antennariidae), covered in camouflaging algae.
RM2HT5E4E–Flamboyant cuttlefish Metasepia pfefferi Mabul, Malaysia
RM2HT5CK5–Orange sea star (Echinaster luzonicus), surrounded by green Urn ascidians (Didemnum molle).
RM2HT54YC–Bottlenose dolphin (Tursiops truncatus), performing in an aquarium. Coffs Harbour, New South Wales, Australia
RM2HT5B70–Australian giant cuttlefish Sepia apama in aggressive stance
RM2HT5CTC–Giant manta (Manta birostris), with Remoras. The paddle-like cephalic lobes scoop plankton-rich water into mouth. Mexico
RM2HT5D1F–Grey nurse shark (Carcharias taurus), Forster, New South Wales, Australia
RM2HT5GMK–Dense aggregation of anemones with anemonefish. North Solitary Islands, New South Wales, Australia
RM2HT5GH9–Strawberry hind (Cephalopholis spiloparaea), North Solitary Islands, New South Wales, Australia
RM2HT5GA9–Starfish (Echinaster sp.), an example of tissue regeneration following defensive autotomy. Entirely new starfish are growing from the discarded limbs.
RM2HT5G76–Spoonworm (Anelassorhynchus porcellus), a common water worm that hides under rocks, burrowed in the sand. Temperate South Pacific
RM2HT5FDN–Anemone that has been bleached by over-warm water, effect of El Nino. When the water becomes too warm many marine animals suffer and eventually die.
RM2HT5FJ0–Mourning cuttlefish (Sepia plangon), Southeastern Australia
RM2HT5FYN–Squid eggs laid on chain on shipwreck. During the mating season, squid lay thousands of eggs on almost any stationary object.
RM2HT5FDJ–Corallimorph (Amplexidiscus fenestrafer), mouth. Great Barrier Reef, Queensland, Australia
RM2HT5EYK–Fingered dragonet (Dactylopus dactylopus), Ambon, Indonesia
RM2HT5EM2–Detail of giant clam mantle (Tridacna sp.), detail of mantle. Great Barrier Reef, Queensland, Australia
RM2HT5BJ6–Twospot turkeyfish (Dendrochirus biocellatus), tiny, nocturnal and well hidden Papua New Guinea
RM2HT58FR–King scallop (Pecten meridionalis), on sandy bottom. Jervis Bay, south coast New South Wales, Australia
RM2HT5BP1–Schultzs pipefish Corythoichthys schultzi adult, about 12 cm long Indonesia
RM2HT59F0–Orangespine unicornfish (Naso lituratus), detail of spines near the tail with which the fish slashes its prey (hence the general name of surgeonfish
RM2HT59HE–Bigeye trevally (Caranx sexfasciatus). school. Flinders Reef, Coral Sea, Australia
RM2HT593R–Diver hovering over gorgonian fan. Coral Sea, Australia
RM2HT5AGD–Reef top: constantly pruned by wave action, it is home to resilient hydroids and fast-growing staghorn corals. Bunaken Reserve, Manado, Indonesia
RM2HT5DYN–Harlequin ghost pipefish (Solenostomus paradoxus), grows to about 10 cm. Can be black or partly transparent with red, yellow and white markings.
RM2HT5732–Commensal shrimp (Periclimenes sp.), in vesicles of Bubble coral (Plerogyra sinuosa). Manado, Indonesia
RM2HT56T3–Razorfish (Aeoliscus strigatus), habitually swim vertically, nose down, in a synchronised group. About 15 cm long. This is a VERTICAL image.
RM2HT5596–Yellow soft coral (Metalcyonium sp.), a leather coral, with polyps extended to feed. Ribbon Reef, Great Barrier Reef, Queensland, Australia
RM2HT5J6T–Blackthroat triplefin (Enneapterygius atrogulare), female camouflaged in weeds; males have a black head mask. Frequents reef and rubble areas.
RM2HT5J7Y–Marionia nudibranch (Marionia cyanobranchiata), a very large nudibranch; one was observed in the Red Sea about 15 cm long.
RM2HT5J7X–Colonial ascidian (Clavelina molluccensis). The surface is sufficiently transparent to show the circular bands of muscle around the pharynx within.
RM2HT5HYH–Red coralline algae (Amphiroa sp.), a red alga. The fronds are reinforced with calcium carbonate that the plant has taken from the water.
RM2HT5H29–Cardinal scorpionfish Scorpaena cardinalis Extremely variable coloration and able to change quickly to suit background. Possess large spines on head w
RM2HT5HHD–Seastar Ophidiaster confertus showing inverted stomach. Seastars eat by inverting their stomachs over their food and digesting it on the spot. The sto
RM2HT5BD8–Black & white humbugs Dascyllus reticulatus near staghorn coral, dive boat silhouette beyond Papua New Guinea
RM2HT5EAC–Large coral spawning (Diploastrea helipora, fam. Faviidae) A large plate coral spawning. this is a male, and the milk sperm puffs out many tims over 3
RM2HT5GG0–Boxer crab (Lybia tessellata), holding stinging anemones for protection and for stunning prey.
RM2HT584F–Caribbean reef shark (Carcharhinus perezii), a large and dangerous species.
RM2HT57E4–Christmas tree worms (Spirobranchus giganteus), showing the feathery radioles that direct prey trapped in them to be carried to the mouth, at top. Man
RM2HT5BD1–Snorkeller swimming over hard corals. These corals grow quickly and do well in shallow water despite occasional damage from storms.
RM2HT5GWR–Clark’s anemonefish (Amphiprion clarkii), dwell within anemone tentacles, immune to their stinging cells. Western Australia
RM2HT59N8–Leafy seadragon (Phycodurus eques)
RM2HT5CY7–Giant manta (Mobula birostris), being approached from the rear by two Clarion angelfish (Holacanthus clarionensis).
RM2HT556C–Yellow plate corals with reef fish, Ribbon Reefs, Great Barrier Reef, Queensland, Australia
RM2HT590N–Gorgonian coral: soft, non-reef-building coral that can grow over a metre tall and across. The more flexible, fan-shaped gorgonians are found in shall
RM2HT5FEE–Longsnout boarfish (Pentaceropsis recurvirostris), South-eastern Australia
RM2HT5FTD–Pelagic nudibranch (Glaucilla marginata), about 1 cm across. South Pacific
RM2HT5EDJ–Pigmy sweepers (Parapriacanthus ransonneti), under black coral tree Ambon, Indonesia
RM2HT5F0E–A medium-sized conch (Strombus sp.), Beady eyes peep out from an overturned shell.
RM2HT5EYX–Pink squat lobster (Lauriea siagiani), found on barrel sponges. Ambon, Indonesia
RM2HT5ECP–Greenfish (Stichopus chloronotus), male spawning through hole on top of head.
RM2HT5A43–Black and white snapper (Macolor niger), school. Usually about 35 cm long. Manado, Malaysia
RM2HT5ATB–Razor Clam (Pinna bicolor). When small, anchors itself to objects by a thin thread; once anchored, sand and mud build up around it as it grows verti
RM2HT58EP–Pipefish hunting on leather coral (Corythoichthys schultzi), hunting on leather coral. Ambon, Indoneisa
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