Scientific Name: Goniobranchus alius
Common Name: Alius goniobranchus

Adult Size: 15 – 40 mm
Depth Range: 5 – 30 m
Biotope / Habitat: Coral reefs and rocky slopes, typically seen gliding over sponges and encrusting corals
Diet: Feeds on sponges, scraping away tissue with its specialized radula for nourishment and chemical defenses
Reproduction: Hermaphroditic; mates reciprocally, laying fine, coiled egg ribbons in safe reef crevices
Fun Fact: Goniobranchus alius’s velvety white mantle, often edged with pale yellow and purple lines, makes it a real showstopper among coral reef nudibranchs!

This beautifully patterned nudibranch is a sight to behold, with a soft white body delicately fringed in purple. Its slow, graceful gliding over sponges is a highlight for divers and photographers exploring tropical reefs.