The infrasonic waves could cause harm to the human body, especially according to the strength of the infrasonic waves. It could cause varying degrees of damage or even death.
To Phoenix Sihuang, the infrasonic waves were harmless and familiar. She was already familiar with producing infrasonic waves and understood some of their meanings.
This ability allowed her to live in the ocean more freely and safely, avoiding certain natural disasters and biological attacks that she did not want to face or could not face in advance.
However, the infrasonic wave that was transmitted to her this time was not the natural resonance of the ocean. Instead, it was very close, and the feeling was very different.
Phoenix Si silently surveyed her surroundings. She did not know if her vigilance was detected by the creature that emitted the infrasonic wave, so the weak infrasonic wave suddenly disappeared without a trace.