The mantle and body of Goniodoris joubini are dark brown with white specks.
There are some larger white or cream patches which often have yellow centres.
There is a broad translucent band around the mantle edge which is sometimes
spotted with yellow and dark brown, grows to about 20mm long alive.
More informations on Goniodoris joubini are at
Bill Rudman's Sea-Slug Forum!
