Click the thumbnail photos to enhance!
The 3 mm specimen pictures #8 and #9 was identified by Dr. Richard C. Willan, thanks! Picture #9 shows for reference as BBQ stick 2 mm in diameter.
More information on Bulla ampulla are on Bill Rudman's Sea Slug Forum!
How to cite:
Köhler, E. (2017), published 22 July 2017, Bulla ampulla Linnaeus, 1758
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Bulla_ampulla.htm