While researching vibrations, I came across the idea that there is a difference in the distance that high-frequency vibrations and low-frequency vibrations can travel. In terms of sound, low-frequency sounds seem to travel farther because their energy is less likely to attenuate in the air and can easily go around obstacles. As for radio waves, very low-frequency waves seem to be able to travel along the earth’s surface and cross even low mountains, and are not attenuated much underwater.
https://www.tele.soumu.go.jp/j/adm/freq/search/myuse/summary
When it comes to communication between living things, it is the transmission of information that is called communication, and it seems that some creatures use low-frequency sounds to transmit information over long distances. Elephants emit infrasound, an extremely low-frequency sound of less than 20 Hz, to vibrate the ground, and receive the vibrations with the soles of their feet, communicating over long distances of about 6.4 km. Compared to the speed of sound traveling through the air at 340 m/s, the speed of sound traveling through the ground is as high as 5,000 m/s, making communication nearly 10 times faster than sound.The vibrations they emit convey meaningful messages such as “Let’s go” and “Welcome to our group.” Elephants are amazing.
https://nazology.kusuguru.co.jp/archives/9366
Additionally, the speed of sound in water is 1500m/s, which allows for communication nearly five times faster than in air. Underwater, sound waves emitted by dolphins can travel over 10km, so dolphins also seem to be able to communicate over long distances. Furthermore, whales are apparently able to communicate over long distances of up to 800km using their ultra-low pitch songs. It’s somewhat mystical that song can become a language for communication. To begin with, the sound whales make is apparently very loud, the loudest sound any living creature can make, loud enough to boil water.
https://logmi.jp/knowledge_culture/culture/315505
Although not low-pitched, the howls of wolves and the cries of birds and monkeys can also be heard several kilometers away. Also, although it is not sound communication, the male of a certain species of moth can find the location of a female several kilometers away using phoromones. The male of this moth has an incredible sense of smell, which is several hundred times stronger due to a protein that increases sensitivity.
I researched long-distance communication, and it turns out that there are creatures that communicate over distances that feel like the scale of the Earth. The world may be connected by communication between various creatures, some long distance and some short distance. Long-distance communication is amazing. The scale of the Earth is amazing.
