Nanocarp have very sensitive hearing.
Using their two ears to sense vibrations coming through the water, these plankton can distinguish sound quality and frequency. They display very interesting reactions to the sound of humans clapping or breathing. Nanocarp are also excellent swimmers. They have a tendency to swim in formations of 16 and react together when they detect sounds. These plankton emit sounds on their own when they sense waves on the water's surface. When this happens, the pitch of sounds they produce changes depending on where the Nanocarp is located.