Ryan Photographic - Polyceridae - Dorid molluscs
Family Polyceridae
The family Polyceridae is represented by 185 species in 26 genera (if my count on the World Register of Marine Species (WoRMs) is correct. Trying to find something out about the family Polyceridae on the internets is like finding three wise men and a virgin in Australia. So what to tell you? Well some of them have spines on their penis - they exhibit a wide range of body morphology and they eat things ...
Nembrotha chamberlaini Chamberlain's nembrotha

Nembrotha chamberlaini Chamberlain's nembrotha Puerto Galera, Philippines IMG_5755
Nembrotha cristata, Crested nembrotha

Nembrotha cristata, Crested nembrotha Raja Ampat, West Papua IMG_0621, Raja Ampat, West Papua IMG_0621
Nembrotha kubaryana Kubaryana's nembrotha
Nembrotha kubaryana Kubaryana's nembrotha, Puerto Galera, Philippines IMG_7237

Nembrotha kubaryana Kubaryana's Nembrotha (ID tentative) Kri Eco, Raja Ampat IMG_6973
Nembrotha lineolata Lined Nembrotha

Nembrotha lineolata Lined Nembrotha Kri Eco Raja Ampat IMG_9394
Nembrotha rutilans

Nembrotha rutilans, Raja Ampat, West Papua IMG_2624
Roboastra gracilis Slender roboastra
 Kadavu, Fiji IMG-3304 med res.jpg)
Roboastra gracilis Slender roboastra, Kadavu, Fiji IMG-3304

Roboastra gracilis, Slender roboastra Kadavu, Fiji IMG_3302
Tambja abdere Concealed tambja
Tambja abdere Concealed tambja Sea of Cortez IMG_3002

Tambja abdere, Loreto, Sea of Cortez IMG_3679
Tambja affinis Related tambja

Tambja affinis, Lembeh Straits IMG_6826
Tambja gabrielae Gabriel's Tambja

Tambja gabrielae Gabriel's Tambja, Rao Island, Morotai, Indonesia IMG_5P7A7558
Tambja morosa Gloomy tambja

Tambja morosa, Lembeh Straits IMG_6789
Thecacera picta Painted Thecacera

Thecacera picta Painted Thecacera Kri Eco, Raja Ampat IMG_7882
Thecacera species

Thecacera species Raja Ampat West Papua IMG_1354

Thecacera species Raja Ampat West Papua IMG_3033