Untitlednear that of the sea-water, with adaptations, such as projectingfilaments, which help flotation, and with capacities of rising andsinking according to the surrounding conditions. Many of them areluminescent, and many of them are very inconspicuous in the water owingto their transparency or their bluish colour. In both cases thesignificance is obscure.Hunger and LoveHunger is often very much in evidence in the open sea, especially inareas where the Plankton is poor. For there is great diversity in thisrespect, most of the Mediterranean, for instance, having a scantyPlankton as compared with the North Sea. In the South Pacific, west ofPatagonia, there is said to be an immense "sea desert" where there islittle Plankton, and therefore little in the way of fishes. The successof fisheries in the North, e.g. on the Atlantic cod-banks, is due to therichness of the floating sea-meadows and the abundance of the smallerconstituents of the animal Plankton.
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