Orange iron oxide hydrothermally altered rock with white bacterial material growing. Small orange coated creature in lower left center.

Barnacles attached to hydrothermal vent spires feeding at Kawio Barat.

Feeding barnacles and some vent shrimp seen at Kawio Barat.

Feeding barnacles and some vent shrimp seen at Kawio Barat. The tentacles, or cirri, of the barnacles, extend like blooming flowers, then fold back into the shell. The white fluff on the cirri are filaments of bacteria that grow in the passing vent water. The barnacles hold them out to promote growth, and then, apparently, retract the cirri to "lick their fingers."

Barnacles attached to hydrothermal vent spires feeding at Kawio Barat. Curiously , the density of barnacles decreases with height and at a color change on the large vent spire in the right center of the image.

Feeding barnacles in close proximity to thermal vent (note shimmering water).

The first animals sighted on this initial dive to Kawio Barat were clams sparsely scattered over the sediment and white mats, both of which use vent fluids as energy for associated microbes.

Shrimp seemingly covered with precipitated material? absorbed ingested material? near vent at Kawio Barat

Shrimp seemingly covered with precipitated material? absorbed ingested material? near vent at Kawio Barat

Shrimp and native sulfur at hydrothermal vent field at Kawio Barat

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Clams were sparsely scattered over the sediment near the vent fields of Kawio Barat.

Clams were sparsely scattered over the sediment near the vent fields of Kawio Barat.

Clams were sparsely scattered over the sediment near the vent fields of Kawio Barat.

Barnacles with cirri extended, large chiton, and shrimp on vent structure at Kawio Barat.

Barnacles with cirri extended, large chiton, and shrimp on vent structure at Kawio Barat.

White bacterial mat and some shrimp at Kawio Barat.

Bacterial mat with bristle worm (polychaete worm) and gastropod.

Barnacles with cirri extended at Kawio Barat.

Barnacles with cirri extended at Kawio Barat.

Hydrothermal vents on Kawio Barat submarine volcano spew white smoke. Image capture more than 1,850 meters deep the Little Hercules ROV.

A large orange shrimp among smaller white ones at Kawio Barat hydrothermal vents field.

Bacteria? Mineral deposit? What is covering this shrimp?

Small white shrimp relatively devoid of coating, a large red shrimp with a coating of material (bacteria? mineral?) at a site where native sulphur has been deposited. Yellow sulphur indicates relatively lower temperatures when molten than black sulphur.

Hydrothermal vents on Kawio Barat submarine volcano spew white smoke. Image capture more than 1,850 meters deep the Little Hercules ROV. Small lineal objects are shrimp. Yellow and black sulphur deposits are seen as well, yellow indicating a lower temperature while molten than the black.

Hydrothermal vent spires at Kawio Barat.

Iron oxide stained hydrothermal vent spires with large orange shrimp

Active vent spire and active vent in lower middle left where shimmering water is seen. Large field of barnacles is seen behind.

Large red shrimp at the edge of a field of barnacle on Kawio Barat. The red dots are laser lights used for measurement and are 10 cm apart. Thus the shrimp is a very large 20 cm or so shrimp.

A large red sea anemone -One of very few sea anemones at the Kawio Barat vent field. Barnacles with cirri extended and shrimp are also seen.

Hydrothermal vents on Kawio Barat submarine volcano spew white smoke. Image captured more than 1,850 meters deep the Little Hercules ROV.

Hydrothermal vents on Kawio Barat submarine volcano spew white smoke. Image captured more than 1,850 meters deep the Little Hercules ROV.

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