Pteraeolidia ianthina reaches 15 cm. Very elongated aeolid nudibranch with purple to pale blue body, white-cream, mauve or purple cerata (dorsal outgrowths) with stinging cnidocyst tips for defense. Unique feature: sequesters symbiotic zooxanthellae from prey hydroids in its cerata, becoming photosynthetic (kleptoplasty relationship). Lives from 1 to 30 m on coral reefs and hydroids of Indo-Pacific. Sought-after macro photo subject for its undulating colors.
Frequently asked questions
How big is the Blue dragon aeolid?
Blue dragon aeolid (Pteraeolidia ianthina) reaches 8–15 cm in length.
At what depth can you find the Blue dragon aeolid?
Blue dragon aeolid is found between 1–30 m deep.
Is the Blue dragon aeolid dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Blue dragon aeolid?