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Israel · Mediterranean
A small chromodorid from the Red Sea and Persian Gulf. When first reported off Israel in 2015 it was already "quite common" off Tel Aviv; it has since spread to Syria, Cyprus and Turkey.
Share link: https://seaslugs.org.il/species/goniobranchus-obsoletus-israel-mediterranean/
Milky white mantle with raised pustules and an orange-brown network between them. Orange mantle edge with an irregular blue-black band inside it. Translucent brown rhinophores and gills outlined in white.
Goniobranchus annulatus is larger, with orange spots and purple rings around the rhinophores and gills.
Shallow rocky reefs and cave walls, ~1–20 m.
Sponges, mainly Chelonaplysilla violacea.
