While diving in Indonesia's Lembeh Strait in May, I filmed this interesting sacoglossan, a sap-sucking sea slug. I'm told it's probably a new, undescribed species in the Stiliger genus (Stiliger sp.).
[video=youtube;iyCu1jTn0iQ]https://www.youtube.com/watch?v=iyCu1jTn0iQ[/video]