"Not clear." The researcher behind thick lenses shook his head. "Though the amplitude of the sound waves we captured is very faint, that is only because the distance is too great. Based on the attenuation function of sound waves in seawater, the number of these things is substantial."
"To be precise, it's a lot," added another bald researcher. "We have never detected biological sound data in this frequency band before, and there are no records in the databases of the Meteorological Agency or the Oceanographic Bureau. Most of the frequencies of the sounds they emit exceed the limit of what the human ear can receive."
"We suspect this is a creature inhabiting the deep sea, startled by this abnormal tsunami, and thus left the deep sea for the surface," the thick-lensed researcher said. "The sonar detected that the depth where they emit sound is more than two thousand meters below sea level. Under normal circumstances, there shouldn't be many colonial marine creatures at such a depth."
Chapter 585