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East Lae`apuki Lava Delta Collapse (November 28, 2005)
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Location: HI, USA
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Bubble Bursts at East Lae`apuki Ocean Entry (May 29, 2006)
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Location: HI, USA
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An unidentified large white anemone densely populates thinly-sedimented goethite (iron oxide) slab rock, the fundamental Viosca Knoll substrate for attachment of sessile particulate-feeding invertebrates....
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Anemones
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Tall bamboo coral trees (Keratoisis flexibilis) are surrounded by fields of unidentified large white anemones and orange-pink flytrap anemones (Actinoscyphia saginata). Small white 'gooseberry' anemones find a feeding perch right on the bamboo coral branches....
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Bamboo Anemones
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Much like Amberjacks on shallow reefs, fast and agile Barrelfish (Hyperoglyphe perciformis) patrol deep reefs in schools, preying upon squid, jellyfish, and small fishes....
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Barrelfish (Hyperoglyphe perciformis)
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Enormous fins spread wide enable the manefish (Caristius sp, probably C. maderensis) to drift motionlessly in midwater, here in the camouflaging company of a luminescent colonial salp. This specimen is the first record of the species in the Gulf of Mexico....
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Caristius Salp
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Areas of active, if subdued, hydrocarbon seeps are notably devoid of large sessile invertebrates. A fluffy gray biofilm coats the underlying rock, dotted with small white patches of the chemo-seep-associated bacteria Beggatoia....
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Chemo Seep Biotope
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Viosca Knoll is an elevated salt dome with dormant and active chemo-seeps. Where hydrocarbons are actively escaping from the substrate, dense clusters of tightly entwined vestimentiferan tubeworms grow. As the submersible approaches, it disturbs a Blackbelly Rosefish (Helicolenus dactylopterus), and...
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Chemo Tubeworms
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Making a burrow in the stony base of Lophelia bushes, a 1.5 m long Conger Eel (Conger oceanicus) emerges from its hiding place to patrol its territory. It preys upon smaller fishes....
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Conger Eel (Conger oceanicus)
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Small sprigs of glass coral are snipped off by the submersible's manipulator and transferred to a multi-chambered sampler for bacterial and genetic analyses. Attracted by the disturbance, a large Conger Eel (Conger oceanicus) then a Snowy Grouper (Epinephelus niveatus), investigates the scene....
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Coral Sampling
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A dense cluster of unidentified dandelion-like anemones, intertwined with spiral vestimentiferan tubeworms waves back and forth in the current. The tight cluster of small anemones sits among a field of larger white anemones....
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Dandelion Anemones
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Small Lophelia sprigs proliferate into a dense mass of white living branches, 1-2 m tall. Over time, groups of coral bushes coalesce to form massive reefs hundreds of meters across. Unlike shallow reefs built by many stony coral species, Lophelia pertusa reefs are generally formed by this single dom...
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Lophelia Coral Thicket
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A true deep-reef denizen, the 3-4 m long female Ragged-Tooth Shark (Odontaspis ferox) navigates skillfully through Lophelia coral bushes. This specimen is only the second reported for the species in the Gulf of Mexico. The prominent notch in the first dorsal fin may be a wound received from a male d...
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Ragged-Tooth Shark (Odontaspis ferox)
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Not a typical inhabitant of deep-reef biotopes, the rattail (or grenadier) cruises nose-down over open substrate around the reefs, searching for small benthic prey....
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Rattail (Nezumia aequalis)
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Hovering at the base of the reef, the reddish Slimehead (Gephyroberyx darwini), is a stealthy ambush predator....
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Slimehead (Gephyroberyx darwini)
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