The Great Blue Shark is a species of fish belonging to the true shark family and the genus Great Blue Shark. The body length of the blue shark ranges from 3.50 to 3.8 meters, with the largest reaching over 7 meters. Body elongation, sub spindle shape; Wide and flat head; The tail is slender, slightly shorter than the head and torso; There is a depression on both the upper and lower sides of the caudal fin base. The blue shark is a warm water upper middle layer fish that swims agilely and has a fierce sex. It lives in tropical or temperate oceans, from the surface of the water to the upper layer of the sea at a depth of 350 meters. In general, its actions are relatively slow, but it can move forward at an extremely fast speed when necessary. Usually active on the surface of water, the pectoral fins are spread out, and the upper leaves of the dorsal and caudal fins are exposed above the water surface, swimming slowly.