
Blue Velvet Slug - Chelidonura varians
Blue Velvet Slug - Chelidonura varians is usually found in sandy areas and when there is one, there usually is plenty of them together in the same small area. In this picture, there are 2 of them, chasing each other's tail trying to get in position for some fun :D

''Chelidonura varians'' is a species of small sea slug, a marine opisthobranch gastropod mollusc in the order Cephalaspidea, the headshield slugs.
Similar species: Headshield Slugs
By Albert Kang
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Uploaded Dec 29, 2016. Captured Dec 24, 2016 18:04 in Majuben Barangay Rd 3, Mabini, Batangas, Philippines.