Diaulula immaculata is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Discodorididae.Valdés Á. 2001. Deep-sea cryptobranch dorid nudibranchs (Mollusca, Opisthobranchia) from the tropical West Pacific, with descriptions of two new genera and eighteen new species. Malacologia 43 (1-2) : 237-311, available online at https://www.biodiversitylibrary.org/page/13143086 Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=458456 on 2012-03-01 References