The MP2Lab-Kleptoslug Team has published a new study on the characterization of the proteome of the mucus of the Tropical sea slug Elysia crispata. The study, published in Journal of Proteomics, reports a high proportion of proteins with enzymatic activity, suggesting potential biotechnological applications, including antimicrobial and antitumor activities. Putative antimicrobial properties are reinforced by the high abundance of hydrolases. This research is a first step in exploring the mucus of E. crispata in medical research, particularly in the treatment against multidrug-resistant bacteria.