This article suggests the possibility of the existence of an ultrasonic channel of information exchange in humans, similar to bats, dolphins, whales, etc. The possible frequency band of such a channel is estimated, resulting in frequencies from several hundred kilohertz to several hundred megahertz. In order to verify the assumption made and to minimize the efforts to find the frequency band of the supposed communication channel in such a wide frequency range, the corresponding experiment is considered and the results of previously performed scientific researches are discussed. The consequences of the presence of such a possibility in humans are considered and, on their basis, an attempt is made to explain some unusual phenomena inherent in humans.