There was a bit in the Lemmino video about exactly this. In it he states that there were 4 hydrophonic stations that heard "something" and follows up with the r

There was a bit in the Lemmino video about exactly this. In it he states that there were 4 hydrophonic stations that heard "something" and follows up with the recordings for you to hear. https://youtu.be/kd2KEHvK-q8?t=435 https://youtu.be/kd2KEHvK-q8?t=435