Pteraeolidia semperi (Bergh, 1870) ♡ Like 0 Observation Details Photographer 吉川芳輝 Location Malaysia > Borneo > Mabul > YKK Date 2020/01/09 Size 20mm Depth 8.0m Water temperature 30.0℃ Related Links Species details: Pteraeolidia semperi (Bergh, 1870) More from 吉川芳輝 More observations from this area Submit Photo Send Message Share Permanent URL: https://en.seaslug.world/observation/19032