Tara Pacific expedition - november 2017 Outer reef of Egum Atoll, Papua New Guinea, Guillaume Iwankow (professional diver, CRIOBE) coring a Porites lobata coral. He uses a hydraulic perforator, powered by a surface compressor which is located in a boat, anchored over the coring site. A coring procedure is executed in several steps and takes between 20 minutes and 2 hours, depending on several factors. D: 10 m

px px dpi = cm x cm = MB
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達志影像

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