Native “Beroe ovata sensu Chun” (Fig. 3C and D) was another species found during our surveys. This species is native to the Mediterranean Sea, described by Chun. But it is remarkably different from B. ovata, which occurs along the northeastern and southeastern American coast (Mayer, 1912; Harbison et al., 1978; Mianzan, 1999; Oliveira and Migotto, 2006) and was recently introduced into the Black Sea (Seravin et al., 2002). It has an oval egg-shaped body and is much less flattened in the paragastric plane (the large diameter of the ellipse is only twice or less than the small diameter) (Fig. 4B). In our video survey observations in the Gulf of Trieste, and measurements from these pictures, this native ctenophore has ratio of length to width (l/w) 2.1+0.2 (Table II).