Nembrotha kubaryana. Bunaken-4522

Nembrotha kubaryana

Class: Gastropoda        Order: Nudibranchia        Family: Polyceridae        Size: to 12 cm

It is a large dark-bodied nudibranch which may have green stripes running down the length of the body or have green raised spots. The margin of the foot and head is a vivid red-orange. The rhinophores and gills may be red or green.

Indo-West Pacific to Solomon Islands and Marshall Island. 

Nembrotha chamberlaini. Lembeh-2600

Nembrotha chamberlaini

Class: Gastropoda        Clade Nudibranchia        Family: Polyceridae                 Size: to 6 cm

Nembrotha chamberlaini is white with streaks of orange, yellow, green, or black and occasionally yellow splashed across the upper mantle. It has very distinctive bright red gills and rhinophores

Indonesia and Philippines. 

Goniobranchus coi Bunaken-2665

Goniobranchus coi 

Class: Gastropoda    Order: Nudibranchia    Family: Chromodorididae        Size: to 5 cm

Goniobranchus coi has a white body and foot, but is instantly recognizable by its distinct dorsal pattern. The outer part of the mantle is yellow, separated from the inner light-brown part by a wavy white and black line. The outer edge of the mantle is brown, with a thin purple line at the margin

West Pacific to Marshall Island,Indonesia,Australia and Fiji. 

Ceratosoma magnificum. Komodo-5427

Ceratosoma magnificum

Class: Gastropoda     Order: Nudibranchia    Family: Chromodorididae        Size: to 7 cm

Convoluted ridge on back with three tall appendages market with bright red and spots. Sides have yellow to red spotting. Red rhinphores and red gill branches with white edging.

Indo- West Pacific to Papua New Guinea. 

Ceratosoma brevicaudatum. Short-talled ceratosoma.Busseltonjetty-9898

Ceratosoma brevicaudatum

Class: Gastropoda    Order: Nudibranchia    Family: Chromodorididae    Size: to 15 cm

This firm-bodied species grows to a maximum recorded length of 15 centimetres. Within South Australian waters, dark coloured individuals are more common in the west and paler colours more so in the east.  They feed on sponges and lay transparent-white spiral strings of eggs. ( Orange form is considered typical in South Australia ). 

Western Australia, across South Australia and Victoria to Cape Byron.

Nembrotha cristata. Bunaken-5842

Nembrotha cristata

Class: Gastropoda     Order: Nudibranchia     Family: Polyceridae        Size: to 12 cm

Nembrotha cristata is black and its body is covered with raised green nodules. The rhinophores are black with green bases. Inhabit reefs and areas of coral rubble. 

Indo-West Pacific to Marshall Islands, Solomon Island and Australia. 

Halgerda batangas Bunaken-8217

Halgerda batangas while laying yellow eggs

Class: Gastropoda         Order: Nudibranchia       Family: Discodorididae        Size: to 4 cm

This animal is one of a group of mainly white species of Halgerda with orange markings. It is characterized by a network of fine, solid, red-orange lines on the mantle. It has a white band around the mantle containing low rounded orange-capped tubercles.

West Pacific from Indonesia and Philippines to Australia. 

Dive, Flabellina iodinea, Rocio del mar, Sea of Cortez, Sub, web post

Flabellinopsis iodinea

Class: Gastropoda      Order: Nudibranchia     Family: Fiabellinidae       Size: to 2 cm

This nudibranch displays a stunning set of colors: the body is purple, the cerata are orange and the rhinophores are scarlet. The neon orange appendages on the back of Flabellinopsis iodinea are the cerata which extract oxygen from the sea water they are surrounded by and live in.

Gulf of California and Galapagos.

Jorunna funebris.Bunaken-7401

Jorunna funebris

Class: Gastropoda       Order: Nudibranchia    Family: Discodorididae         Size: to 5 cm

Jorunna funebris, common name the dotted nudibranch, is a large species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk. 

Indo-West Pacific to Marshall Islands and Fiji, also Japan.

Glossodoris cincta. Lembeh.-4208

Glossodoris cincta

Class: Gastropoda      Order: Nudibranchia     Family: Chromodorididae        Size: to 6 cm

Glossodoris cincta has a mantle which is tawny brown with blue-white dots and a dark blue margin to the mantle which is separated from the brown by a thin grey line. The rhinophores are dark brown with blue-white dots.

Indo-West Pacific to Marshall Islands, Australia and Fiji. 

Glossodoris rufomarginata. Manado. Siladen.-3911

Glossodoris rufomarginata

Class: Gastropoda   Order: Nudibranchia   Family: Chromodorididae   Size: to 5 cm

Glossodoris cincta has a mantle which is tawny brown with blue-white dots and a dark blue margin to the mantle which is separated from the brown by a thin grey line. The rhinophores are dark brown with blue-white dots.

Indo-West Pacific to Marshall Islands, Australia and Fiji. 

Glossodoris rufomarginata. Bunaken-6483
Aeolid Nudibranchs, Critter, Cuthona yamasui, Indonesia, Lembeh, Manado, Sub, Sulawesi, Yamasu's Cut

Trinchesia yamasui

Class: Gastropoda      Order: Nudibranchia      Family: Trinchesiidae        Size: to 5 cm

Blue to brown or white body, cerata have a gold band just below tip and varying amounts of green and blue. Cerata become thin when animal moves.

Indo-West Pacific to E.Australia, also Japan. 

Phyllodesmium briareum. Lembeh.-5910

Phyllodesmium briareum

Class: Gastropoda       Order: Nudibranchia         Family: Facelinidae      Size: to 3 cm

Phyllodesmium briareum uses camouflage and looks like the soft coral Briareum violacea with which it is often found.

West Pacific to Australia and Vanuatu. 

Taringa halgerda. Komodo.-5845

Taringa halgerda

Class: Gastropoda     Order: Nudibranchia       Family: Discodorididae        Size: to 5 cm

Taringa halgerda is white with very distinct yellow tubercles covering the mantle. The gills of this nudibranch are white, faintly outlined in black, and the rhinophores are black.

Indo-West Pacific to Australia. 

Marionia distincta.Lembeh-5464

Mariona distincta

Class: Gastropoda     Superfamily: Tritonioidea        Family: Tritoniidae            Size: to 6 cm

The Indo-Pacific is home to numerous undescribed species of the genus Marionia, the systematics of which is poorly known. The two genera are separated by the presence of chitinous plates in the stomach of species of Marionia. This species has not been found in association with any particular soft coral species, but is common in shallow reef communities where Xenia soft marine corals are dominant.

Indonesia.

Marionia sp.3. Bunaken N.P.  -3798

Marionia sp.

Hypselodoris tryoni. Emperor shrimp. Lembeh.-1997

Hypselodoris tryoni & Periclimenes imperator  (emperor shrimp)

Class: Gastropoda      Order: Nudibranchia     Family: Chromodorididae         Size: to 7 cm

Hypselodoris tryoni has a brown body and white foot. The body and upper dorsum are covered in purple spots ringed with white or light-brown. The gills are typically translucent white or light-brown and the rhinophores are brown to dark-brown and covered in circular white lines. It has a thin blue or purple line on the mantle edge

West Pacific from Indonesia and Philippines to Australia. 

Goniobranchus leopardus. Bunaken-2520

Goniobranchus leopardus

Class: Gastropoda        Order: Nudibranchia       Family: Chromodorididae        Size: to 6 cm

The top of the mantle is brownish with dark spots circled with white. The margin of the mantle is white with at the external border a fine purple to electric blue line. The rhinophores are lamellate and contractile, the base is white topped with blue to purple but they can also be white with a longitudinal blue to purple line.

NW Australia, Indonesia, Malaysia, the Philippines and the Solomon Islands

Hypselodoris apolegma.Lembeh.-1946

Hypselodoris apolegma

Class: Gastropoda     Order: Nudibranchia     Family: Chromodorididae.            Size: to 10 cm

Purple with speckled marginal band, orange rhino-bores and tall yellow-orange gill. 

West Pacific from Malaysia, Indonesia and Philippines. 

Goniobranchus coi.Bunaken-2659

Goniobranchus coi 

Hypselodoris bullockii. Lembeh-5212

Hypselodoris bullockii

Class: Gastropoda     Order: Nudibranchia     Family: Chromodorididae       Size: to 7 cm

There are several similar body colors and mantle variations, which are generally referred to as the Hypselodoris bullocki  complex. it is not clear if these are variations or different species or a mixture of both.

West Pacific to Marshall Islands,New Caledonia and Australia.

Hypselodoris bullockii. Lembeh-5941

Hypselodoris bullockii

Chromodoris willani. Bunaken-4688

Chromodoris villani

Class: Gastropoda        Order: Nudibranchia        Family: Chromodorididae         Size: to 3.5 cm

This species can be distinguished by the very prominent white specks found on the gills and rhinophores. Individuals in this species can range in color from dark blue to a translucent white. All have black stripes with the center-most stripe typically being non-continuous

West Pacific to Guam and Vanuatu, also Japan.

Hypselodoris infucata. Colorful Hypselodoris. Lembeh-2401

Hypselodoris infucata     Colorful Hypselodoris

Class: Gastropoda   Order: Nudibranchia    Family: Chromodorididae     Size: to 5 cm

Light to dark body with areas of white, blue or gray. Bright yellow and smaller dark spots. Red rhinophores and gill branches.

indo-West Pacific to New Caledonia and Hawaii. The species now also occurs in the Mediterranean.

Dive, Hyselodoris ghiselini
Felimare californiensis, Rocio del mar, Sea of Cortez, Sub

Felimare californiensis 

Class: Gastropoda       Order: Nudibranchia        Family: Chromodorididae        Size: to 9 cm

Felimare californiensis has a blue mantle and foot with moderately large yellow-orange spots. This nudibranch is found in the Eastern Pacific Ocean along the Californian coast from Monterey Bay through Baja California. It became regionally extinct in the northern part of its range, disappearing completely from California by 1984. It reappeared beginning in 2003 and is now found in a few isolated places in California. 

Chromodoris dianae. Bunaken.-0040

Chromodoris dianae

Class: Gastropoda        Order: Nudibranchia         Family: Chromodorididae        Size: to 6 cm

The body is elongate with a foot which is distinct from the upper body by a skirt like mantle partially hiding the foot.Chromodoris dianae has white gills and rhinophores with distinct yellow-orange tips.

West Pacific from Indonesia and Philippines,also Japan. 

Chromodoris annae.

Chromodoris annae

Class: Gastropoda        Order: Nudibranchia       Family: Chromodorididae       Size: to 6 cm

The main background color is bluish, the intensity of the latter varying from blue-grey to intense blue, slightly speckled by tiny black spots.The blue dorsal side and the foot are bordered with a black line which can be discontinuous depending on the specimen.

 Indo-Pacific region from Malaysia, Indonesia and the Philippines to the Marshall Islands.

Tambja morosa. Lembeh.-2498

Tambja morosa

Class: Gastropoda        Clade Nudibranchia        Family: Polyceridae         Size: to 7 cm

This species is normally black with blue markings. It has approximately five round, blue spots on its back, a blue band around its head, and a bright blue margin.

Indonesia and Philippines

Tambja gabrielae. Lembeh.-5620

Tambja gabriela

Class: Gastropoda Clade       Nudibranchia        Family: Polyceridae        Size: to 6.5 cm

Dark green to nearly black with yellowish wide green to yellow stripes and spots.

West-Pacific from Indonesia and Philippines to Papua New Guinea.

Jorunna rubescens. Komodo.-5438

Jorunna rubesens

Class: Gastropoda       Order: Nudibranchia        Family: Discodorididae        Size: to 20 cm

It can be recognised by the red-brown lines that are found all over the mantle. Its mantle is covered in small spiculate papillae (caryophyllidia) which are characteristic of the Jorunna genus.

It is one of the largest members of its genus

Indo-West Pacific to Marshall Islands and Fiji, also Japan.

Paolo Cudicini

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