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Nudibranchs

Cryptobranch Discodorids

Cryptobranch Discodorid Nudibranchs



Index

Sea Slugs



Side-Gilled

Side-Gilled Slugs

Umbrella Shells

Umbrella Shells

Head-shield Slugs

Head-shield Slugs

Pteropods

Pteropods

Sap-Sucking Slugs

Sap-Sucking Slugs

Sea Hares

Sea Hares

Nudibranchs



Phanerobranch Dorids

Side-Gilled Slugs

Cryptobranch Discodorids

Cryptobranch Discodorids

Cryptobranch Chromodorids

Cryptobranch Chromodorids

Radula-less Dorids

Radula-less Dorids

Arminids

Arminids

Dendronotids

Sap-Sucking Slugs

Aeolids

Aeolids

The Cryptobranchia is the largest group of dorids. The name translates to "hidden gills" in reference to their ability to retract their gills for protection. All feed sponges, and some are so cryptic (Rostanga) that they blend seamlessly into the background on the sponge surface.

Identification is not always easy. If you are not careful, you might miss the gills on some Aldisia and Paradoris species, making you think that they were Warty Nudibranchs belonging to Phyllidia or related genera.

In this section you'll find the Dorids, which include genera that are divers' favourites such as Halgerda, Jorunna and the huge hydrochloric acid secreting Asteronotis caespitosus.

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Discodorididae -without Cariophyllidia



Ardisia is very distinctive with it's deep depressions along the midline of the upper body surface. Discodoris boholiensis is often seen crawling quickly, for a dorid, over hard surfaces. The mantle is very flexible and sometimes offers a good hiding place for Emperor Shrimps.

The small genus Taringa has feathery gills so similar to those of Halgerda that one species was named T. halgerda.

Stacks Image 3620
Asteronotus caespitosus
Asteronotus caespitosus gills
Asteronotus hepaticus
Carminodoris-estrelyado
Carminodoris estrelyado
Carminodoris sp.
Discodoris boholiensis
Discodoris boholiensis with Xeenopontonia imperator
Discodoris boholiensis juvenile
Discodoris boholiensis
Discodoris boholiensis
Discodoris sanguinea
Halgerda batangas
Halgerda batangas head
Halgerda batangas with Xenopontonia imperator
Halgerda batangas with Xenopontonia imperator
Halgerda batangas mating
Halgerda reticulata
Halgerda tessellata
Halgerda willeyi
Taringa halgerda
Thordisia sp. 1 (Gosliner et al. 2018)
Thordisa sp.?

Discodorididae - Carophyllida bearing



Some of these sponge-eating nudibranchs are so well camoflaged that they are almost impossible see.

Atagema intecta
Atagema sp.
Stacks Image 3664
Stacks Image 3665
Stacks Image 3666
Stacks Image 3667
Jorunna parva
Jorunna rubescens
Jorunna rubescens
Platydoris cf. sanguinea
Rostanga sp.
Rostanga sp.
Rostanga sp. 7 (Gosliner et al. 2015) with Gelastocaris paronae

Discodorididae

Discodorididae

Ardisia is very distinctive with it's deep depressions along the midline of the upper body surface. Discodoris boholiensis is often seen crawling quickly, for a dorid, over hard surfaces. The mantle is very flexible and sometimes offers a good hiding place for Emperor Shrimps.

The small genus Taringa has feathery gills so similar to those of Halgerda that one species was named T. halgerda.

Asteronotus caespitosus
Asteronotus caespitosus
Asteronotus caespitosus gills
Asteronotus hepaticus
Carminodoris estrelyado
Carminodoris estrelyado
Carminodoris sp.
Discodoris boholiensis
Discodoris boholiensis with Xeenopontonia imperator
Stacks Image 3715
Discodoris boholiensis
Discodoris boholiensis
Discodoris sanguinea
Halgerda batangas
Halgerda batangas head
Halgerda batangas with Xenopontonia imperator
Halgerda batangas with Xenopontonia imperator
Halgerda batangas mating
Halgerda reticulata
Halgerda tessellata
Halgerda willeyi
Taringa halgerda
Thordisia sp. 1 (Gosliner et al. 2018)
Thordisa sp.?

Discodorididae - Carophyllida bearing

Discodorididae - Carophyllida bearing

Some of these sponge-eating nudibranchs are so well camoflaged that they are almost impossible see.

Atagema intecta
Atagema sp.
Diadula sp. 2 (Gosliner et al. 2018)
Jorunna  funebris
Jorunna funebris
Jorunna funebris mouthparts
Jorunna parva
Jorunna rubescens
Jorunna rubescens
Platydoris cf. sanguinea
Rostanga sp.
Rostanga sp.
Rostanga sp. 7 (Gosliner et al. 2015) with Gelastocaris paronae