penguin swimming in a pool in an enclosure, viewed through an underwater window

penguin swimming in a pool in an enclosure, viewed through an underwater window. The penguin has dark gray feathers with light speckles on its back and a lighter gray belly. It is swimming near the window and moves further into the pool during the video. Behind the penguin and across the pool is a fabricated rock formation, where several other penguins are standing or resting. The water in the pool is greenish in color and there are visible particles floating in it. The enclosure is lit from above. The underwater window has some water droplets on it that distort the view. Toward the end, a hand appears, briefly holding a clear surface against the window.