Walking Nudibranch Shaking Its Head

Occurred on November 24, 2021 / Ishigaki Island, Okinawa, Japan

Info from Licensor: "This is Thuridilla splendens, a colorful nudibranch measuring 2 to 3 cm. It has an interesting walking style. It has thick antennae and its head moves up and down while it walks, which is cute. It belongs to a group that developed from conch. They eat seaweed and use its cells for photosynthesis. It seems to be an eco-friendly nudibranch."