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This sight of triangular fins slicing through the water usually elicits immediate fear, distress or panic in people. Response to such sightings is normally to say that a shark or a school of sharks is nearby, preparing to attack. Sharks-the shadows in the sea have long been depicted as evil, sinister culprits inhabiting our ocean and estuaries (Schwartz, 1984). From time immemorial sharks have been the objects of amusement for the sea-faring men and anglers and ...
Although man now dominates the earth, on the evolutionary time scale he is a newcomer, still in his infancy. If length of residence determined his right to rule, he would have to wait at the end of a very long line of less ambitious creatures. But man, the newcomer, can have a tremendous impact on the destiny of his older neighbors because of his ability to drastically alter the world in which he lives. They have a long past history, which dates back to about 120 ...