The depth of the sea floor is several kilometers. Why are there strange noises?

The mysterious sea floor often makes all kinds of wonderful sounds. In addition to the rolling waves, the ringing of the waves, the noise generated by submarine earthquakes and volcanic activities, whenever there is a sudden change in the wind and cloud, abnormal weather or storm warning, there will be waves of rhythmic whining in the depths of many islands, like muffled thunder rolling, one high and one low, and the height is scattered. Some people say it sounds like the howling of sea pigs, while others say it is the sound of an alarm submerged in seawater to detect ocean currents.

Once, Dr. Roger Payne, a famous American biologist, and his wife Katie took a boat to explore Bermuda in the Atlantic Ocean. As night fell, I suddenly heard waves of beautiful songs coming from the hydrophone. It has a clear rhythm, rhythm and alternation, and it is very regular and lasts for 30 minutes. This strange song aroused the interest and enthusiasm of Paynes and many biologists. To solve this mystery, they dived into the depths of the ocean.

After many explorations, it turns out that humpback whales are singing. Whenever it swims to the breeding ground in tropical waters from winter, it will happily sing this touching love song. Singers are all men, and these songs have new changes every year. Humpback whales living in different sea areas can sing different songs, but the structure and change law of music scores are the same, which shows that humpback whales' ability to compose music is hereditary.

In fact, many marine fish have the ability to make sounds, which is also the need for fish to survive. Drum fish drummed like drums to scare off the enemy; Toad fish make a long flute, looking for a mate. Among the sounds made by fish, there are clucking, humming, coughing, whistling, screaming, grinding teeth, scratching and drums. According to the research of some scientists, the sound of fish is often caused by the vibration of swim bladder and the friction of various parts of bones. The purpose of these voices is mainly to warn themselves that similar dangers are coming. Of course, people still don't know much about the meaning of fish pronunciation, and they can't completely judge whether their pronunciation is to convey some kind of information, but the situation of using pronounced fish in naval battles has long existed.