First Record Of Aplysia Dactylomela Rang, 1828 (Heterobranchia, Aplysiidae) from Pianosa Island (northern Tyrrhenian Sea)

Abstract

The non-indigenous spotted sea hare Aplysia dactylomela Rang, 1828, entered the Mediterranean Sea from the Atlantic, is recorded for the first time from shallow coastal waters of Pianosa Island in 2015. This record can be considered the first occurrence in the northern Tyrrhenian Sea. One specimen of A. dactylomela was photographed while was feeding on a rock bottom mainly covered with red algae.