I owe a huge debt of gratitude to Dave Behrens and Terry Gosliner for their incredibly helpful assistance in identifying my nudibranch photos. For the vast majority of my shots, they turned my "I think it could possibly be..." into a positive i.d.

Philippines (Page 1)

Aegires citrinus Aegires citrinus	Aegires villosus Aegires villosus	Aegires villosus Aegires villosus
Armina cf. semperi Armina cf. semperi	Armina sp. 1 Armina sp. 1	Armina sp. 2 Armina sp. 2
Asteronotus mimeticus Asteronotus mimeticus	Atagema sp. Atagema sp.	Baeolidia sp. Baeolidia sp.
Cadlinella ornatissima Cadlinella ornatissima	Cadlinella ornatissima Cadlinella ornatissima	Carminodoris flammea Carminodoris flammea
Ceratophyllidia sp. Ceratophyllidia sp.	Ceratosoma alleni Ceratosoma alleni	Ceratosoma gracillimum Ceratosoma gracillimum
Ceratosoma gracillimum Ceratosoma gracillimum	Ceratosoma sinuatum Ceratosoma sinuatum	Ceratosoma sinuatum Ceratosoma sinuatum
Ceratosoma tenue Ceratosoma tenue	Ceratosoma trilobatum Ceratosoma trilobatum	Ceratosoma trilobatum Ceratosoma trilobatum
Cerberilla affinis Cerberilla affinis	Chromodoris albopunctata Chromodoris albopunctata	Chromodoris annae Chromodoris annae
Chromodoris annae Chromodoris annae	Chromodoris aspersa Chromodoris aspersa	Chromodoris aureopurpurea Chromodoris aureopurpurea
Chromodoris coi Chromodoris coi	Chromodoris colemani Chromodoris colemani	Chromodoris collingwoodi Chromodoris collingwoodi
Chromodoris dianae Chromodoris dianae	Chromodoris dianae Chromodoris dianae	Chromodoris elisabethina Chromodoris elisabethina
Chromodoris fidelis Chromodoris fidelis	Chromodoris geometrica Chromodoris geometrica	Chromodoris hintuanensis Chromodoris hintuanensis
Chromodoris joshi Chromodoris joshi	Chromodoris leopardus Chromodoris leopardus	Chromodoris lochi Chromodoris lochi
Chromodoris magnifica Chromodoris magnifica	Chromodoris magnifica Chromodoris magnifica	Chromodoris magnifica Chromodoris magnifica
Chromodoris preciosa Chromodoris preciosa	Chromodoris cf. reticulata Chromodoris cf. reticulata	Chromodoris rubrocornuta Chromodoris rubrocornuta
Chromodoris sp. Chromodoris sp.	Chromodoris striatella Chromodoris striatella	Chromodoris cf. strigata Chromodoris cf. strigata
Chromodoris tinctoria Chromodoris tinctoria	Chromodoris tinctoria (juvenile) Chromodoris tinctoria	Chromodoris verrieri Chromodoris verrieri
Chromodoris willani Chromodoris willani	Cratena simba Cratena simba	Cuthona yamasui Cuthona yamasui
Dendrodoris denisoni (juvenile) Dendrodoris denisoni	Dendrodoris denisoni Dendrodoris denisoni	Dendrodoris fumata Dendrodoris fumata
Dendrodoris fumata Dendrodoris fumata	Dendrodoris guttata Dendrodoris guttata	Dendrodoris nigra Dendrodoris nigra
Dendronotus regius Dendronotus regius	Dendronotus regius Dendronotus regius	Dermatobranchus sp. 1 Dermatobranchus sp. 1
Dermatobranchus sp. 2 Dermatobranchus sp. 2	Discodoris boholensis Discodoris boholensis	Discodoris cebuensis Discodoris cebuensis
Discodoris lilacina Discodoris lilacina	Discodoris lilacina Discodoris lilacina	Discodoris lilacina Discodoris lilacina
Discodoris lilacina Discodoris lilacina	Doto sp. Doto sp.	Durvilledoris pusilla Durvilledoris pusilla
Eubranchus mandapamensis Eubranchus mandapamensis	Eubranchus sp. Eubranchus sp.	Facelinid sp. Facelinid sp.
Favorinus japonicus Favorinus japonicus	Favorinus mirabilis Favorinus mirabilis	Favorinus tsuruganus Favorinus tsuruganus
Flabellina bicolor Flabellina bicolor	Flabellina exoptata Flabellina exoptata	Flabellina rubrolineata Flabellina rubrolineata
Glossodoris atromarginata Glossodoris atromarginata	Glossodoris averni Glossodoris averni	Glossodoris cincta Glossodoris cincta
Glossodoris pallida Glossodoris pallida	Glossodoris pallida Glossodoris pallida	Glossodoris rufomarginata Glossodoris rufomarginata
Glossodoris sp. Glossodoris sp.	Goniodoris felis Goniodoris felis	Gymnodoris aurita Gymnodoris aurita
Gymnodoris citrina Gymnodoris citrina	Gymnodoris rubropapulosa Gymnodoris rubropapulosa	Halgerda batangas Halgerda batangas
Halgerda batangas Halgerda batangas	Halgerda tesselata Halgerda tesselata	Halgerda willeyi Halgerda willeyi
Halgerda willeyi Halgerda willeyi	Hallaxa hileenae Hallaxa hileenae	Spanish Dancer Hexabranchus sanguineus
Spanish Dancer (juvenile) Hexabranchus sanguineus