Scientific Name: Thuridilla multimarginata
Common Name: Multimargined thuridilla

Adult Size: 10 – 25 mm
Depth Range: 5 – 20 m
Biotope / Habitat: Coral reef slopes and rocky outcrops, typically seen gliding over algae-covered rocks and rubble patches
Diet: Feeds on green algae, using its radula to gently scrape out cell contents for nourishment and temporary chloroplast retention (kleptoplasty)
Reproduction: Hermaphroditic; mates reciprocally, with small, coiled egg ribbons laid on algae or in protected reef areas
Fun Fact: Thuridilla multimarginata’s narrow, leaf-like body is decorated with multiple, fine white lines that create a stunning pinstripe effect against its vibrant green base, blending perfectly among the reef’s algae!

This beautiful little sea slug’s fine lines and phototrophic lifestyle make it a sought-after subject for macro photographers and a delight for algae-loving divers.