Hermissenda crassicornis (from the underside – he’s crawling on the glass). Photo by M. LaBarbera

Hermissenda crassicornis
San Juan Island, WA
Argyle Lagoon
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia

clade Euthyneura
clade Nudipleura
clade Nudibranchia
clade Dexiarchia
clade Cladobranchia
clade Aeolidida
Superfamily: Aeolidioidea
Family: Facelinidae

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