96 photos - 38 species
Hypselodoris apolegma Yonow, 2001
Giant hypselodoris or Purple nudibranch
Maximum length: 50 mm
Intense pink to blue body with a white margin along the mantle,
the margin and upper side of which has small spots (unlike the next species,
which has only a narrow margin).
Gills and rhinophores are yellow.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris bullockii Collingwood, 1881
Bullock's hypselodoris or Bullock's nudibranch
Maximum length: 70 mm
Intense pink to cream colored, white body and a thin,
distinctive white margin on the mantle,
(the species above has a wider white margin with dots)
gills and rhinophores are orange to pale yellow.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris emma Rudman, 1977
Emma's hypselodoris
Maximum length: 45 mm
Cream to yellow body with three purple to dark red lines on the upper side, the outer lines connect the gills and rhinophores.
The gills and rhinophores are orange to red.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris infucata Rüppell & Leuckart, 1830
Mottled dorid, Painted hypselodoris or Corlorful hypselodoris
Maximum length: 30 mm
Violet-blue body with small, white-yellow and black spots.
There are large white spots along the edge of the mantle.
The gills and rhinophores are white with yellow to orange.
Photo 1 Johnny: Bangka Island North Sulawesi
Photos 2 - 3 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris sp.7
Hypselodoris maculosa Pease 1871
Spotted hypselodoris
Maximum length: 40 mm
White body with brown, red or purple markings, with a series of white lines,
some of which may be interrupted.
White and purple spots all over the mantle.
The rinophores are white with red, brown or orange bands.
Photos 1 - 3 Johnny: Banga Island North - Sulawesi
Hypselodoris maridadilus Rudman, 1977
Magenta-striped nudibranch or Beautiful hyselodoris
Maximum length: 45 mm
Cream to yellow body with five dark, blue, purple or red longitudinal lines and equally colored edges from mantle to foot.
The gills are red, the rhinophores red with white tips.
Photo 1 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris pulchella Rüppell & Leuckart, 1830
Cute Risbecia
Maximum length: 110 mm
Slender, white to purple body, with many small, orange dots on the upper side and on the foot.
The mantle has a thin, blue to violet edge.
Often head - to - tail crawling around, usually seen in pairs.
Photos 1 - 4 Johnny: Hurghada Egypt
Photo 5 Astrid: Hurghada Egypt
Hypselodoris tryoni Garrett, 1873
Tryon's risbecia or Tryon's hypselodoris
Maximum length: 90 mm
The body is cream to brownish, with black to red spots outlined in white.
There are thin blue lines on the mantle and foot.
The gills and rhinophores are yellow, pink to purple in color.
Often confused with Chromodoris leoparda, which has circles and no dots.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Photos 3 - 5 Johnny: Lembeh Strait North - Sulawesi
Hypselodoris zephyra Gosliner & R.Johnson, 1999
West wind hypselodoris
Maximum length: 40 mm
White to yellowish body with thin, black or bluish-purple lines, blue to purple and yellow spots with soft edges between the lines and on the edge of the mantle.
The gills and rhinophores are brownish to orange.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Jorunna funebris Keelart, 1859
Funeral jorunna
Maximum length: 90 mm
White body with irregular patterns, mostly round, often black tubercles forming groups.
The rhinophores have black tips, the gills are black on the branches.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Photo 3 Johnny: Lembeh Strait North - Sulawesi
Jorunna parva Baba, 1938
Little jorunna
Maximum length: 25 mm
Brown to orange body with a series of black fine pointed needles ( Caryophyllidia ).
It has reddish-brown rhinophores and gills.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Mexichromis mariei Crosse, 1872
Marie's mexichromis
Maximum length: 25 mm
Body white or bluish to intense pink.
Purple warts on the upper side, the edge of the mantle is decorated
with an orange band or dense spots.
The gills and rhinophores are purple like the body.
Photo 1 - 2 Johnny: Bangka Island North Sulawesi
Photo 3 Johnny: Lembeh -Strait North - Sulawesi
Mexichromis multituberculata Baba, 1953
Bumpy mexichromis or Purple wart nudibranch
Maximum length: 20 mm
White to yellow body with stalked tubercles spotted with purple or red.
Mantle margin with rows of pustules, mostly orange, yellow or purple.
The rhinophores are blue to purple.
Photo 1 Johnny: Lembeh Strait North - Sulawesi
Mexichromis pusilla Bergh, 1874
Nudibranch - no english name yet
Maximum length: 20 mm
Feeds on sponges.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Mexichromis trilineata
Three - lined Pectenodoris
Maximum length: 0.7 - 1.5 cm
Maximum depth: 8 m
Body color: Lilac to light blue, with 3 yellow stripes (hence the name).
Feeds exclusively on sponges.
Often confused with Mexichromis similaris.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Miamira sinuta
Jolly Green nudibranch
Maximum length: 5 - 6 cm
Maximum depth: 27 m
Very variable in color, pink to brown, green, yellow, grey,
with yellow to pink dots, blue lines forming a net-like pattern.
Gills and rhinophores mostly with white, fine speckles.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Nembrotha chamberlaini Gosliner & Behrens, 1997
Chamberlains Nembrotha
Maximum length: 60 mm
Brown to black saddle spots on the upper side of their whitish body,
sometimes lines, they have a blue border along the mouth and foot.
The gills are red with blue or pink, with a yellow base,
the rhinophores are colored like the gills,
but have blue to purple rings around the base, which is bordered in yellow.
Photo 2 shows the animals during reproduction.
Photo 1 Johnny: Lembeh Strait North - Sulawesi
Photos 2 - 3 Johnny: Bangka Island North - Sulawesi
Nembrotha cristata Bergh, 1877
Crested nembrotha
Maximum length: 50 mm
Black body with green warts.
Photo 1 Johnny: Bangka Island North - Sulawesi
Photo 2 Astrid: Bangka Island North - Sulawesi
Photo 3 Johnny: Moalboal Philippines
Nembrotha kubaryana Bergh, 1877
Dusky nembrotha, Variable neon slug, Dusky nembrotha
or Kubaryana's nembrotha
Maximum length: 80 mm
Green pustules on the black body, in some forms connected to form longitudinal lines.
The foot end and the rhinophores are orange to red, the gills orange, red to green.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Nembrotha lineolata Bergh, 1905
Lined nembrotha or Lined neon slug
Maximum length: 40 mm
Cream-colored with numerous narrow brown lines and faint red
and purple markings on the gill and rhinophores.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Nembrotha milleri Gosliner & Behrens, 1997
( Millers Nembrotha )
Maximum length: 60 mm
This species is found throughout the tropical Indo-Pacific,
it has a dark to grey-green body coloration with rhinophores and gills that are usually black.
Photos 1 - 3 Johnny: Moalboal Philippines
Photo 4 Astrid: Moaboal Philippines
Nembrotha sp.
No english name yet
Maximum length: 30 mm
The body is pink to dark brown, yellow to pink or orange pustules.
Rhinophores usually with a white ring at the base.
Widespread, but may include several species.
Photo 1 Johnny: Bali Indonesia
Nembrotha sp.
No english name yet
After long research on the internet and inquiries with marine biologists,
they could not tell me so far which Nembrotha it is,
it seems to be a new undiscovered species, there are some similar,
but none that has white dots between the gills and rhinophores, therefore sp.
Photos 1 - 3 Johnny: Bangka Island North - Sulawesi
Nembrotha sp.
No english name yet
Maximum length:??
This animal here is also still undescribed, it is very similar to Nembrotha cristata,
only the color is different.
While the green one is already described,
this one and the one with the red spots (see the species above this one) are not yet described.
Photo 1 Johnny: Bangka Island North Sulawesi
Nembrotha sp 2
No english name yet
Maximum length: 40 mm
This species also has no name yet, but has already been described.
White body with a few black lines dorsally
and yellow pigment extending to the gill and further back.
Photos 1 - 2 Astrid: Bangka Island North Sulawesi
Notodoris minor Eliot, 1904
Banana nudibranch
Maximum length: 100 mm
Light yellow body with black lines and dots.
Rigid and hard body.
Feeds on the yellow calcareous sponge.
Photos 1 - 4 Johnny: Bangka Island North - Sulawesi
Pelagella longicornis
Longhorn Pelagella
Maximum length: 0.6 cm
Maximum depth: not known
It was only newly described in 2023.
Its name longicornis refers to its extremely long rhinophores.
So far it has only been sighted on the Marshal Islands, here is proof that it also lives in North Sulawesi.
Photo 1 Johnny: Bangka Island North Sulawesi
Peltodoris murrea Abraham, 1877
Nudibranch - no english name yet
Maximum length: 30 mm
White body with grayish-pink spots, sometimes with a black dot in the spot,
rough and sandy texture.
White rhinophores and gills.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Tambja gabrielae Pola, Cervera & Gosliner, 2005
Gabriela's tambja
Maximum length: 100 mm (usually 60 mm)
Black to dark green or steel blue body with bright yellow spots or stripes.
The front of the head and the edge of the foot have yellow lines.
The front of the gills and the rhinophores are bright yellow.
Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi
Tambja morosa Bergh, 1877
Gloomy nudibranch or Gloomy tambja
Maximum length: 60 mm
The body is black-green to deep blue, some with, others without large blue spots.
They have bright blue bands on the head, mouth and foot edge.
Photos 1 - 6 Johnny: Lembeh Strait North - Sulawesi
Tambja olivaria Yonow, 1994
Olive-tambja or Neon-mark tambja
Maximum length: 80 mm
Olive green with a yellow-green spot on the head, edged in black.
Rhinophores are usually black.
There are also yellow pigments at the end of the body.
Photos 1 - 3 Johnny: Moalboal Philippines
Tambja sp.
No english name yet
Maximum length: ?
It has not yet been described.
This group has more species than any other group,
it does not seem to represent a single natural group but a collection of several species.
Photos 1 - 2 Johnny: Bangla Island North Sulawesi
Thecacera sp.8
No english name yet
Maximum length: 40 mm
Although the species has already been described, it does not yet have its own name.
This specimen had a length of about 8 mm.
Orange with purple to black markings.
The rhinophores are also orange and have black tips.
Photo 1 Astrid: Bangka Island North Sulawesi
Photo 2 Johnny: Bangka Island North Sulawesi
Thordisa sp.
Nudibranch - no english name yet
Maximum length: ??
A still undescribed animal.
Very difficult to photograph, you can hardly see the rhinophores
and the gills look as if they are covered in sand.
Photos 1 - 3 Johnny: Bangka Island North Sulawesi
Thorunna halourga
no english designation
Maximum length: 0.5 - 1.6 cm
Maximum depth: 52 m
Body color: Light purple-pink to dark purple.
The color is darker at the beginning and end of the body where the white mantle edge begins.
The mantle edge is opaque and slightly wavy.
Rhinophores translucent at the base, dark reddish at the tips.
They are found on sand and coral rubble and on sponges that they eat.
Photo 1 Johnny: Bangka Island North Sulawesi
Thorunna furtiva Bergh, 1878
Nudibranch - no english name yet
Maximum length: 20 mm
White body with orange to brown edges.
The rhinophores and gills also have an orange to brown border on the outside and inside.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Tyrannodoris luteolineata, Baba 1936
No english name yet
Maximum length: 30 mm
Bluish black body with many thin yellow longitudinal stripes and a blue spot behind each rhinophore
( indented on the photo ) and a blue foot edge.
The gills and rhinophores are almost black with a yellow base.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi