Modern Developments
The modern whaling harpoon consists of a deck-mounted launcher (mostly a cannon) and a projectile which is a large harpoon connected to a thick rope. The spearhead is shaped in a manner which allows it to penetrate the thick layers of whale blubber and stick in the flesh. It has sharp spikes to prevent the harpoon from sliding out. Thus, by pulling the rope with a motor, the whalers can drag the whale back to their ship.
A recent development in harpoon technology is the hand-held speargun. Divers use the speargun for defense against dangerous marine animals. They are also used for spearing fish. Spearguns may be powered by pressurized gas or with mechanical means like springs or elastic bands.
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