Killer whale Lin's cry and practice scene [Port of Nagoya Public Aquarium]

I observed the killer whale "Rin" and the dolphins in the killer whale pool at the Port of Nagoya Public Aquarium in Nagoya, Aichi Prefecture . I was able to see them undergo health checks and practice, and at the end, I saw Rin make a sound. I hadn't heard much of the sound of killer whales, so I was surprised by the unexpected sound.