**5. Conclusions**

In conclusion, *R. pulmo* ovaries and oocytes could represent a promising source of bioactive compounds for different applications mainly in the pharmaceutical field or as specialty feed. In particular, the antibacterial lysozyme-like activity suggests that this jellyfish species may represent a new and renewable resource for drugs discovery. Moreover, the presence of ω-3 PUFAs encourages their potential exploitation as sources of these compounds in the production of fish feed. Further studies will help to standardize a sustainable exploitation pilot system to use different jellyfish fractions for different purposes (e.g., food, feed) and beneficial services for human wellbeing.

**Author Contributions:** Conceptualization, L.S., F.P.F., S.P., and L.B.; Methodology, L.S., F.A., L.D.C., C.R.G., L.R., and L.B.; Validation, L.S., L.R., F.P.F., S.P., and L.B.; Investigation, L.S., L.R., F.A., L.D.C., C.R.G., S.L., and L.B.; Writing-Review & Editing, L.S., L.R., F.P.F., S.P., and L.B.; Supervision, L.S., F.P.F., S.P.; Funding Acquisition, S.P. and L.B.

**Funding:** This research was funded by the European Community's Horizon 2020 Programme—project PULMO, Marie Sklodowska-Curie Individual Fellowships, gran<sup>t</sup> number 708698, and project CERES, Research and Innovation Programme, gran<sup>t</sup> number 678193.

**Conflicts of Interest:** The authors declare no conflict of interest.
