In the early hours of today...a humpback was heard over the Lime Kiln hydrophones.
At first he seemed to be distant...then 'at' the hydrophones. This is cropped down to get the great parts, so there is a tiny pause early-on to eliminate when he wasn't making any sound.
It seemed like he was checking out the hydrophones and working on them too! (joke).
Sounded like he had a hammer! (toward the end)
Enjoy...it sure has me smiling!