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Submitted By- Group-3 Name of the group members: Submitted To ID No. Mehedi Hasan Fisheries A. Khayrul Hasan Md. Hashem Ali Md.
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Tools of the Oceanographer: Sampling Equipment

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Sampling tools for the marine environment - Coastal Wiki

Small fish may pass through large-meshed nets; large fish may out-swim trawls; gill nets will catch fish mainly of a certain size range. Fish may react differently to fishing gear with respect to species, size, biological state, environmental conditions including ambient light and the acoustic noise field, among many other factors. The disparity in appropriate techniques for different sizes of groups of organisms has contributed greatly to the paucity of studies on more than one taxonomic grouping at a given locale. Unfortunately, where conflicting conclusions have been drawn patterns in different groups of organisms, it is rarely possible to know whether the patterns truly vary among groups or merely reflect differences in sampling efforts. The choice of a suitable sampler is a compromise between a variety of factors. Sampling tools for pelagic organisms Midwater or pelagic trawl [1] A midwater or pelagic trawl is a set of gear that is used to catch fish that are between the sea surface and bottom, generally staying clear of the bottom.
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Sampling tools for the marine environment

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