probably Aplysia juliana

Walking seahare

Anilao, Philippines 2015
Dive site: Anilao pier (night dive)

Aplysia kurodai

Kuroda's sea hare

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Aplysia kurodai

Kuroda's sea hare

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Aplysia parvula

Dwarf sea hare

Romblon, the Philippines 2017
Dive site: Bangug 3

Aplysia sp.

unidentified swimming sea hare

Lembeh, Indonesia 2010
Dive site: Madidir (night dive)

Aplysia sp.

undetermined sea hare

Halmahera, Indonesia 2014
Dive site: Tanjung uli

Bursatella leachii

Leach's sea hare

Bali, Indonesia 2016
Dive site: Puri jati

Dolabella auricularia

Blunt-end sea hare

Cebu, Philippines 2007
house reef Magic Island (night dive)

Dolabella auricularia

Blunt-end sea hare

Romblon, the Philippines 2017
Dive site: Agnay dessert (night dive)

probably Dolabrifera dolabrifera

Warty seacat

Anilao, Philippines 2015
Dive site: Basura

Notarchus indicus

Sailing sea hare

Negros, the Philippines 2012
Dive site: San Miguel (night dive)

Notarchus indicus

Sailing sea hare

Anilao, Philippines 2015
Dive site: Secret garden

Notarchus indicus

Sailing sea hare

Romblon, the Philippines 2017
Dive site: Bon bon (night dive)

Phyllaplysia sp.

Seagrass sea hare

Raja ampat, Indonesia 2014
Dive site: house reef Sorido (night dive)

Phyllaplysia sp.

Lined sea hare

Raja ampat, Indonesia 2014
Dive site: house reef Sorido (night dive)

Stylocheilus striatus

Seagrass sea hare

Romblon, the Philippines 2017
Dive site: Bon bon (night dive)

Syphonota geographica

Geographic sea hare

Bali, Indonesia 2016
Dive site: Puri jati (night dive)

family Aplysiidae

undetermined sea hare

Raja ampat, Indonesia 2014
Dive site: house reef Sorido (night dive)

probably family Aplysiidae

undetermined sea hare ?

Bali, Indonesia 2016
Dive site: Seraya

2 Chelidonura amoena

Pleasant chelidonura

Lembeh, Indonesia 2006
Dive site: Nudi retreat

2 Chelidonura amoena

Pleasant chelidonura

Lembeh, Indonesia 2010
Dive site: Serena basar (night dive)

Chelidonura amoena

Pleasant chelidonura

Bali, Indonesia 2011
Dive site: house reef Kubu Indah (night dive)

Chelidonura amoena

Pleasant chelidonura

Lembeh, Indonesia 2014
Dive site: Monument (night dive)

Chelidonura amoena

Pleasant chelidonura

Raja ampat, Indonesia 2014
Dive site: house reef Kri eco (night dive)

Chelidonura electra

Bright chelidonura

Halmahera, Indonesia 2014
Dive site: Mangrove (night dive)

Chelidonura electra

Bright chelidonura

Halmahera, Indonesia 2010
house reef Weda resort (night dive)

2 Chelidonura electra

Bright chelidonura

Halmahera, Indonesia 2014
Dive site: Mangrove (night dive)

Chelidonura hirundinina

Swallowtail Chelidonura

Bali, Indonesia 2009
Dive site: Secret bay

Chelidonura hirundinina

juvenile Swallowtail Chelidonura

Ambon, Indonesia 2010
Dive site: DJ Point

Chelidonura inornata

Inornate Chelidonura

Bali, Indonesia 2009
Dive site: Secret bay

Chelidonura pallida

?

Romblon, the Philippines 2017
Dive site: Bon bon (night dive)

Chelidonura varians

Variable Chelidonura

Negros, the Philippines 2012
Dive site: Siquijor, Paliton (sanctuary)

Chelidonura varians

Variable Chelidonura

Raja ampat, Indonesia 2014
Dive site: Yenbuba jetty

Chelidonura varians

Variable Chelidonura, mating

Romblon, the Philippines 2017
Dive site: Agnay dessert (night dive)

Odontoglaja guamensis

?

Marsa alam, Egypt 2012
Dive site: house reef Oasis (night dive)

Philinopsis ctenophoraphaga

?

Lembeh, Indonesia 2006
Dive site: Jahir

Philinopsis gardineri

Headshield slug

Lembeh, Indonesia 2008
Dive site: Tanduk rusa (night dive)

Philinopsis cyanea

Blue-lined philinopsis

Lembeh, Indonesia 2008
Dive site: Teluk kembahu II (night dive)

Philinopsis pilsbryi

Pilsbry's philinopsis

Bali, Indonesia 2011
Dive site: house reef Kubu Indah (night dive)

Philinopsis pilsbryi

Pilsbry's philinopsis

Negros, the Philippines 2012
Dive site: San Miguel (night dive)

Philinopsis pilsbryi

Pilsbry's philinopsis

Lembeh, Indonesia 2014
Dive site: Nudi falls (night dive)

Philinopsis reticulata

Reticulated Philinopsis

Bali, Indonesia 2009
Dive site: Secret bay

Philinopsis sp.

Philinopsis egg mass

Bali, Indonesia 2016
Dive site: Amed, Ghost bay

Berthella martensi

Marten's berthella

Cebu, Philippines 2007
house reef Magic Island (night dive)

Euselenops luniceps

Moon-faced euselenops

Lembeh, Indonesia 2008
Dive site: Jarijari-Jahir (night dive)

Euselenops luniceps 1

Moon-faced euselenops, mating

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Euselenops luniceps 2

Moon-faced euselenops, mating

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Euselenops luniceps

Moon-faced euselenops, egg ribbon

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Euselenops luniceps

Moon-faced euselenops + egg ribbon

Lembeh, Indonesia 2014
Dive site: Jahir (night dive)

Pleurobranchus albiguttatus

Mosaic pleurobranch

Bali, Indonesia 2016
Dive site: Seraya point (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Lembeh, Indonesia 2006
Dive site: The new place / Fish factory

Pleurobranchus forskalii

Forskal’s pleurobranchus

Cebu, the Philippines 2012
house reef Magic Island (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Cebu, the Philippines 2012
house reef Magic Island (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Negros, the Philippines 2012
Dive site: San Miguel (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Halmahera, Indonesia 2014
Dive site: Dive site: Airstrip (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Lembeh, Indonesia 2014
Dive site: Madidir I (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Anilao, Philippines 2015
Dive site: house reef Portulano (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Anilao, Philippines 2015
Dive site: Sea pipe (night dive)

Pleurobranchus forskalii

Forskal’s pleurobranchus

Anilao, Philippines 2015
Dive site: Koala (night dive)

Pleurobranchus grandis

Grand pleurobranchus

Lembeh, Indonesia 2008
Dive site: Nudi falls (night dive)

Pleurobranchus peroni

Peron's sidegill slug, with egg ribbon

Bali, Indonesia 2009
Dive site: Seraya

Pleurobranchus peroni

Peron's sidegill slug

Bali, Indonesia 2016
Dive site: Seraya point (night dive)

Elysia crispata

Lettuce sea slug

Caribbean, Bonaire 2013
Dive site: Reef scientifico (night dive)

Elysia crispata

Lettuce sea slug

Caribbean, Bonaire 2013
Dive site: Reef scientifico (night dive)

Elysia crispata

Lettuce sea slug

Caribbean, Bonaire 2013
Dive site: Windsock (night dive)

Elysia crispata

Lettuce sea slug

Caribbean, Bonaire 2013
Dive site: Reef scientifico (night dive)

Elysia ornata

Ornate elysia

Cabilao, Philippines 2005
Dive site: house reef Polaris, north

Elysia ornata

Ornate elysia

Lembeh, Indonesia 2008
Dive site: Critter hunt

Elysia ornata

Ornate elysia

Bali, Indonesia 2009
Dive site: Secret bay

Elysia ornata

Ornate elysia with egg ribbon

Bali, Indonesia 2009
Dive site: Secret bay

Elysia ornata

Ornate elysia

Negros, the Philippines 2012
Dive site: San Miguel

Elysia ornata

Ornate elysia

Bali, Indonesia 2016
Dive site: Tulamben, house reef Ocean view

Elysia ornata

Ornate elysia

Bali, Indonesia 2016
Dive site: Secret bay

Elysia pusilla

Halimeda sapsucking slug

Romblon, the Philippines 2017
Dive site: Logbon, Sand slope

Elysia sp.

Giant elysia

Raja ampat, Indonesia 2014
Dive site: Nudibranch rock

probably Elysia sp.

?

Romblon, the Philippines 2017
Dive site: Bangug check (night dive)

Plakobranchus ocellatus

Ocellate plakobranchus

Cabilao, Philippines 2005
Dive site: Talisay pier

Plakobranchus ocellatus

Ocellate plakobranchus

Cebu, the Philippines 2012
Dive site: house reef Magic Island

Plakobranchus ocellatus

Ocellate plakobranchus

Halmahera, Indonesia 2014
Dive site: Pasir putih

Plakobranchus ocellatus

Ringed sap-sucking slug

Raja ampat, Indonesia 2014
Dive site: house reef Kri Eco (night dive)

Plakobranchus ocellatus

Ringed sap-sucking slug

Anilao, Philippines 2015
Dive site: Ligpo cavern

Plakobranchus ocellatus

Ringed sap-sucking slug

Anilao, Philippines 2015
Dive site: Basura

Thuridilla albopustulosa

White-spotted thuridilla

Lembeh, Indonesia 2008
Dive site: Nudi falls

Thuridilla carlsoni

Carlsons thuridilla

Raja ampat, Indonesia 2014
Dive site: house reef Kri eco (night dive)

Thuridilla carlsoni

Carlsons thuridilla

Anilao, Philippines 2015
Dive site: Matu

Thuridilla gracilis

Glazed thuridilla

Cebu, the Philippines 2007
house reef Magic Island (night dive)

Thuridilla gracilis

Glazed thuridilla

Lembeh, Indonesia 2008
house reef Divers Lodge Lembeh (night dive)

Thuridilla gracilis

Glazed thuridilla

Halmahera, Indonesia 2010
Dive site: N 00.24.747 / E 127.55.176

Thuridilla gracilis

Glazed thuridilla

Cebu, the Philippines 2012
Dive site: Tuble north

Thuridilla gracilis

Glazed thuridilla

Raja ampat, Indonesia 2014
Dive site: house reef Kri eco (night dive)

Thuridilla gracilis

Glazed thuridilla

Anilao, Philippines 2015
Dive site: Red rock

Thuridilla gracilis

Glazed thuridilla

Bali, Indonesia 2016
Dive site: Tulamben, Liberty

Thuridilla gracilis

Slender sapsucking slug

Romblon, the Philippines 2017
Dive site: Bangug 3 (night dive)

Thuridilla lineolata

Lined thuridilla

Lembeh, Indonesia 2008
Dive site: Nudi retreat

Thuridilla lineolata

Lined thuridilla

Cebu, the Philippines 2007
Dive site: Golf point

Thuridilla lineolata

Lined thuridilla

Cebu, the Philippines 2007
house reef Magic Island (night dive)

Thuridilla lineolata

Lined thuridilla

Negros, the Philippines 2012
Dive site: Apo Island, Chapel

Thuridilla undula

Wavy thuridilla

Bali, Indonesia 2011
Dive site: house reef Kubu Indah (night dive)

Thuridilla undula

Wavy thuridilla

Bali, Indonesia 2011
Dive site: house reef Kubu Indah (night dive)

Lobiger nevilli

?

Romblon, the Philippines 2017
Dive site: Bon bon (night dive)

Umbraculum umbraculum

Umbrella pleurobranch

Lembeh, Indonesia 2014
Dive site: Air prang (night dive)

Umbraculum umbraculum 1

Umbrella pleurobranch

Lembeh, Indonesia 2014
Dive site: Air prang (night dive)

Umbraculum umbraculum 2

Umbrella pleurobranch

Lembeh, Indonesia 2014
Dive site: Air prang (night dive)