Blue Swallowtail Slug (Chelidonura hirundinina) ニシキツバメガイ
The Blue Swallotail Slug is a type of Headshield slug. The body without the tails can get to be 2cm. They sometimes have green stripes. Amami 2025
Blue Swallowtail Slug ニシキツバメガイ
Nudibranch