Hypselodoris tryoni reaches 10 cm. Large Indo-Pacific nudibranch (Chromodorididae) (formerly Risbecia tryoni) with cream-white mantle covered with distinctive large black spots and purple-blue edge, white gills, orange rhinophores. Remarkable behavior: pairs often move in trail-following file (one tactilely following another), characteristic of transitioned Risbecia/Hypselodoris. Lives from 5 to 40 m on coral reefs of central and western Indo-Pacific. Iconic macro photo subject in trail-following pair.
Photo of Tryon's hypselodoris
Frequently asked questions
How big is the Tryon's hypselodoris?
Tryon's hypselodoris (Hypselodoris tryoni) reaches 5–10 cm in length.
At what depth can you find the Tryon's hypselodoris?
Tryon's hypselodoris is found between 5–40 m deep.
Is the Tryon's hypselodoris dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Tryon's hypselodoris?