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A typical diffuse flow community in the Fiji and Lau Basins, with the two snail species, Alviniconcha hessleri and Ifremeria nautilei, and the mussel Bathymodiolus brevior; C.R. Fisher, PSU © WHOI.

Hydrothermal chimney at the East Pacific Rise (9°50’N); R.A. Lutz, Rutgers Univ. © Stephen Low Productions and WHOI.

Macrofaunal community on a sulfide edifice at Main Endeavour Field, Endeavour Segment, Juan de Fuca Ridge; D.S. Kelley, UW © UW, ROPOS and NEPTUNE Canada.

Individuals of the stalked barnacle with bacteria on its cirri, which are foot-like appendages that extend from the shell, at the Kilo Moana vent field, Eastern Lau Spreading Center; C.R. Fisher, PSU © WHOI.

Basalt seafloor at the East Pacific Rise (9°50’N); R.A. Lutz, Rutgers Univ. © Stephen Low Productions and WHOI.

The scale worm Branchinotogluma segonzaci on the “Hogwarts Chimney” at the ABE vent field, Eastern Lau Spreading Center; C.R. Fisher, PSU © WHOI.

Aggregation of the tubeworm Riftia pachyptila and the fish Thermarces cerebus at the East Pacific Rise (9°50’N), R.A. Lutz, Rutgers Univ. © Stephen Low Productions and WHOI.

The crab Austinograea alayseae and a cluster of shrimp on a hydrothermal chimney at the Kilo Moana vent field, Eastern Lau Spreading Center; C.R. Fisher, PSU © WHOI.

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Ridge 2000 is an interdisciplinary initiative to study Earth's oceanic spreading ridge system as an integrated whole, from its inception in the mantle to its manifestations in the biosphere and water column. The Ridge 2000 program is sponsored by the National Science Foundation.

Featured paper:

Ito, G. and M.D. Behn (2008) Magmatic and tectonic extension at mid-ocean ridges: 2. Origin of axial morphology Geochem. Geophys. Geosyst., 9, Q09O12, doi:10.1029/2008GC001970.

Each month, we highlight a paper that demonstrates the integration and synthesis of data collected at mid-ocean ridges. To recommend a "Featured Paper", please contact the Ridge 2000 Program Office.