Generally speaking, a shark's tail is relatively long. Their shape is more like a sword, with two tail fins at the back of the long tail. Specifically, the shape and length of the tail vary according to the species of shark. For example, in some species of shark, the tail will take up about half of the length of the whole body. Shark tails are very important for their own activities.
The shape of the shark's tail has been introduced above, and then its role. Specifically, the role of shark tail is very many, which has a great impact on shark's life activities and survival.
1. The function of keeping balance: When the shark is swimming and moving forward in the water, the tail can play the role of keeping balance. Without the tail, the balance of the shark would be very poor.
2. Propulsion: In the process of shark swimming, the tail can not only play a balancing role, but also a propelling role, that is to say, the tail can make the shark swim faster.
3. Self-defense: The shark's tail can also play a role in protecting itself. For example, if there is an enemy behind them, they can wave their tail to scare them away. Shark tail swing speed and amplitude are relatively large, the corresponding strength is relatively large, can let the enemy too late to avoid, the role of self-defense is very obvious.
