Sea butterflies "Limacina retroversa". (image) Naturalis Biodiversity Center Share Print E-Mail Caption A compilation of sea butterflies "Limacina retroversa" captured during the AMT27 ocean expedition. Credit Credits: Lisette Mekkes & Katja Peijnenburg, Naturalis. Usage Restrictions With credits mentioned. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.