*4.1. Animal Material*

Specimens of *A. cannabina* were collected by SCUBA diving in Kea Island, Aegean Sea, Greece, at a depth of 15–20 m, whereas specimens of *S. carnosus* were collected by dredging at Kyllini Bay, Ionian Sea, Greece, at a depth of 50–70 m, and kept frozen until analyzed. Voucher specimens have been deposited at the animal collection of the Department of Pharmacognosy and Chemistry of Natural Products, National and Kapodistrian University of Athens (ATPH/MP0300 and ATPH/MP0106, respectively).
