Scientific Name: Thuridilla hoffae
Common Name: Hoff’s thuridilla

Adult Size: 10 – 20 mm
Depth Range: 5 – 20 m
Biotope / Habitat: Shallow coral reef slopes and rocky outcrops, often seen gliding over algae-covered surfaces and rubble patches
Diet: Feeds on algae, using its radula to gently scrape and consume cell contents while incorporating chloroplasts (kleptoplasty)
Reproduction: Hermaphroditic; mates reciprocally, with small, coiled egg ribbons laid in protected reef areas
Fun Fact: Thuridilla hoffae’s slender, leaf-like body is decorated in electric blue and bright orange outlines making it a tiny, living jewel of the reef!

This elegant little sea slug’s subtle coloration and phototrophic abilities make it a fascinating find for macro photographers and reef enthusiasts exploring algae-rich areas.