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Figure 50. Petersen scoop bottom sampling device used by the Danish scientistC. G. Johan Petersen for studies of the bottom sediments of the Baltic Seafrom 1910 to 1912. Top: the original sampler. Bottom: sampling device in theOceanographic Museum. Petersen studied the samples to make precise quantitative studies of the fauna in the sedimentary material. (Image credit: Oceanographic Museum of Monaco | Y. Berard)