Goniobranchus annulatus is a species of sea slug, a very colourful dorid #nudibranch Taken by #Underwaterphotographer #DanielSasse #yourshotphotographer #Scubadiving #Aonang #Krabi #instadive #Marinelifeprotection #Ouroceans #Underwaterphotography #natgeo #nature #uwpic #Savetheoceans #Marineconservation #Oceandefender #Saveourseas #underwaterlife #fish #ecowarrior #natgeowild #blueplanet #scubashooter