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Graduate students Robbie Young and Yong-Jin Won make numbered markers that will be placed at each sampled hydrothermal vent. The white rectangle markers are made of a special material called syntactic foam. The three-foot yellow line attaches the marker to an anchor. Yong-Jin flashes a ‘thumb’s up’ because the line fits through the hole he drilled.


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Graduate students Robbie Young and Yong-Jin Won make numbered markers that will be placed at each sampled hydrothermal vent. The white rectangle markers are made of a special material called syntactic foam. The three-foot yellow line attaches the marker to an anchor. Yong-Jin flashes a �thumb�s up� because the line fits through the hole he drilled.

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