Gymnodoris ceylonica (Kelaart, 1858)

(Figure 25 J)

Material examined. Four specimens. MB28-004413, BL, 25 Nov. 2010, 2m, 35mm; MB28-004429, BL, 17 Nov. 2011, 4m, 30mm; MB28-00 4430, BL, 17 Nov. 2011, 4m, 30mm; MHN-YT1038, VIAIR, 12 Dec. 2013, 4m, 33mm.

Habitats. Subtropical and tropical seagrass.

Occurrences. Barra, Nuarro and Vamizi Island.

Geographic distribution. Indo-west, central Pacific. French Polynesia, Marshall Islands, Tonga, Guam, Japan, Solomon Islands (Gosliner et al. 2008), Guam (Carlson & Hoff 2003), Taiwan (Huang et al. 2015), Sri Lanka (Kelaart 1858), Australia, Thailand (Mehrotra & Scott 2015), India (Apte 2009), Indonesia, Red Sea (Debelius 1996), Réunion Island, Seychelles (Gosliner et al. 2008) and Mozambique (Macnae & Kalk 1958).

Remarks. A mating aggregation with several individuals laying eggs was observed in November 2011 during the austral summer. A similar aggregation was previously observed Taiwan (Huang et al. 2015).