Tuna is a kind of fish that lives in the ocean, and they are a kind of interesting fish. Tuna has some characteristics. For example, their swimming speed is very fast, and their swimming range is very wide, even across the ocean. Their average speed will be 60-80 kilometers per hour, and the fastest speed can reach 160 kilometers per hour. Moreover, because of their special gill structure, they need to be in a state of swimming all the time in order to breathe smoothly. They can't stop, or they risk suffocation.
The adaptability of tuna is also relatively strong, and its vitality is relatively strong. In addition, the appearance of tuna also has some characteristics. For example, their bodies are streamlined and have less resistance to swimming. Their tails are half-moon shaped, which also allows them to swim faster.
Tuna is a kind of bony fish, is the tuna family, tuna fish. Then, many people will wonder why they are named "tuna". There are two main reasons. The most important reason is that they are very fast, as mentioned above, they can reach an average speed of 60-80 kilometers per hour, comparing their speed to guns is an exaggeration, which can better highlight their fast swimming characteristics. Another reason is their color, their back color will be darker, the belly side is usually more shiny, or there are some nice stripes, and so on, and even some tuna themselves are golden, so named.
