摘要: OUR knowledge of the density (number and weight per sq. m.) bottom animals in deeper waters is very scanty, since few quantitative samples have hitherto been taken, none at depths exceeding 1,000–1,400 m. It may therefore be interest that Danish Deep Sea Expedition Galathea has succeeded taking thirteen with a 0.2 Petersen grab off West African coast between 820 3,782 The number species specimens sample are given accompanying table.
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