The swordfish is named after its sharp bill resembling a sword, which together with its streamlined physique allows it to cut through the water with great ease and agility. Contrary to belief the “sword” is not used to spear, but instead may be used to slash at its prey in order to injure the prey animal, to make for an easier catch. Mainly the swordfish relies on its great speed, capable of reaching speeds up to 50 mph (80 kph), and agility in the water to catch its prey. One possible defensive use for the sword-like bill is for protection from its few natural predators. The shortfin mako shark is one of the rare sea creatures big enough and fast enough to chase down and kill an adult swordfish, but they don’t always win. Sometimes in the struggle with a shark a swordfish can kill it by ramming it in the gills or belly.
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