![]() ![]() ![]() The fastest strikes reach close to 50 mph, creating strong shock waves that cause gas to diffuse out of the water in bubbles. The shark uses its elongated tail to whip unsuspecting prey, a unique behavior that stuns the fish before it is consumed. The thresher sharkâs tail serves more than a tool for locomotion. Research comparing the differences between young tiger sharks and mature sharks suggest the more symmetrical shape may help during long migrations made by adults. Considered the least picky of shark species when it comes to prey, the tiger shark will eat practically anything it can sink its teeth into, like birds, dolphins, jellyfish, crabs and even garbage. The tiger shark hovers above, the two forks of its caudal fin noticeably similar in size. In this illustration, four sharks from the IndoPacific region are placed side by side for comparison. However, some research suggests the shape allows for easy, horizontal cruising. ![]() Scientists still debate the function of this unique shape, and it may serve a different purpose from shark species to shark species when combined with other physical characteristics. This asymmetrical profile was common in many ancient fishes, but sharks are the only group to maintain the shape over a period of 350 million years. If you look at the top half of the fin, it is noticeably longer than the bottom half. Shark tail fins, also called the caudal fins, are unique among all fishes. ![]()
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