Austraeolis catina Ev. Marcus & Er. Marcus, 1967
Long horn aolid
Maximum length: 0.7 - 2.5 cm
Maximum depth: 3 - 35 m
This nocturnal thread snail lives in reefs. Found on sponges
where it feeds on unknown hydrozoans.
In this case, orange and purple sponges are known.
Photos 1 - 2 Johnny: Bonaire Caribbean
Antonietta janthina ( Baba & Hamatani, 1977 )
no english designation
Maximum length: 0.6 - 1 cm
Maximum depth: not known, this was at a depth of about 10 m
Pink to purple body with numerous cerata.
Rhinophores and gills orange.
Photo 1 Johnny: Bangka island North Sulawesi
Baeolidia moebii ( Bergh, 1888 )
Colorful aeolid
Maximum length: 3.3 - 7 cm this one is juvenile with approx. 1.5 cm
Maximum depth: No depth information found
Widespread sea snail.
It also exists with intense blue spots or with yellow tips on the rhinophores.
It feeds on the sea anemone Cricophorus nutrix.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Bornella anguilla S. Johnson, 1984
Snakey bornella or Eel bornella
Maximum length: 80 mm
Bright and complex colour pattern with orange and black
paddle-shaped appendages on the sides and rhinophores.
This species can swim by moving like an eel.
Photos 1 - 3 Johnny. Bangka Island North Sulawesi
Cabangus regius Pola & Stout, 2008
Regal dendronotus
Maximum length: 30 mm
Translucent white with alternating olive-green and brown spots over the entire surface.
Photos 1 - 2 Astrid: Bangka Island North Sulawesi
Caloria indica Bergh, 1896
Indian nudibranch
Maximum length: 30 mm
Variable colours, translucent grey to orange or brown.
Head with two thick white lines.
Photos 1 - 4 Johnny: Bangka Island North - Sulawesi
Caloria sp
No english designation
Maximum length: Not known. This one had approx. 12 mm
Maximum depth: Not known. We found this one at approx. 10 m
There is no definite identification of this animal yet.
This species seems to be the one listed on the website Sea Slugs of Hawaii
as well as on Gosliner et al. ( 2018) as Caloria sp.1.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Cerberilla ambonensis ( Bergh, 1905 )
Ambon Cerberilla
Maximum length: 5 cm
Maximum depth: 12 m
All these species have a broad foot.
They have numerous ceratas arranged in transverse rows across the body.
They are found on and in sandy substrates,
where they burrow and feed on burrowing sea anemones.
The edge of the foot has distinctive black or dark brown transverse lines.
The cerata are brown, with a yellow to orange band on the dorsal surface,
the foot is translucent white.
Photo 1 Johnny: Bangka island North Sulawesi
Whitetipped slug, Desirable flabellina or Much-desired flabellina
Maximum length: 35 mm
Transparent, grey to pink body, with long, pointed appendages,
variably with a purple or blue ring, with light yellow to orange tips.
The rhinophores are orange.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Photos 3 - 4 Johnny: Lembeh Strait North - Sulawesi
Coryphellina rubrolineata O'Donoghue, 1929
Redline flabellina or Red lined flabellina
Maximum length: 42 mm
The back is covered with a certain number of projections,
known as cerata, which vary in size from animal to animal.
The colouration is variable.
Photo 1 Johnny: Bangka Island North Sulawesi
Photos 2 - 3 Johnny: Bangka Island North - Sulawesi
Doto greenamyeri Shipman & Gosliner, 2015
Donut nudibranch
Maximum length: 15 mm
Body with a series of grey and gold rings, face with gold line and a grey border.
Rhinophores golden or black.
Photos 1 - 2 Johnny: Bangka North - Sulawesi
Doto sp.
Doto sp.
Maximum length: ??
Unfortunately, nothing more is known about this snail species,
a marine biologist gave me its name,
whereby sp. always stands for unnamed.
Only on the picture I saw to the right of the fish that there was another snail,
therefore not so favourably taken.
It must have been about 4 mm long.
Snails of the Dotida family are mainly small nudibranchs.
Photo 1 Astrid: Bangka Island North Sulawesi
Doto ussi Ortea, 1982
Golden doto or Bubble nudibranch
Maximum length: 30 mm
Brownish - grey with white pigments outlined in white or yellow.
It has numerous small rounded tubercles on its surface.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Facelina sp.
No english designation
Maximum length: Unknown. This was 2 cm tall
Maximum depth: Unknown. We found it at a depth of about 12 meters.
There are a huge number of Facelinas that have not yet been described,
they are all listed under sp.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Facelina sp.
No english designation
Maximum length: Unknown. This was 2 cm tall
Maximum depth: Unknown. We found it at a depth of about 12 meters.
There are a huge number of Facelinas that have not yet been described,
they are all listed under sp.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Favorinus japonicus Baba, 1949
Japanese favorinus or Egg-eating nudibranch
Maximum length: 20 mm
Translucent white with opaque white markings and diamonds on the body.
Rhinophores with 2 - 3 nodes.
Feeds on the eggs of other snail species.
Photo 1 Johnny: Bangka Island North Sulawesi
Favorinus mirabilis ( Baba, 1955 )
Wonderfull favorinus
Maximum length: 0.9 cm
Maximum depth: No depth information given. ( This was at 13 m )
This snail exists in different color variations,
from pink with white speckles, orange, beige, to brown specimens.
Some of them have white tips on the cerata.
Feeding: Eggs from other nudibranchs.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Favorinus tsuruganus ( Baba & Abe, 1964 )
Tsurunga nudibranch, Ringed favorinus
Maximum length: 4 cm
Maximum depth: 15 m
I couldn't find out much about this thread snail, except
that this species also feeds exclusively on the spawn of other nudibranchs.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Flabellina engeli
Nudibranch
Length: 1.5 - 2 cm
Depth: 1 - 12 m
Elongated body that narrows towards the back.
Photo 1 Johnny: Bonaire Caribbean
Flabellina sp.
Nudibranch
Maximum length: ??
An as yet undescribed species of the Flabellina family.
Photo 1 Johnny: Lembeh Strait North - Sulawesi
Godiva sp.
No english designation
Maximum length: Not known. This one was about 3 cm long
Maximum depth: Not known. We found this one at a depth of 18 m
This species is not yet described, therefore sp.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Kabeiro sp.
Nudibranch
I have had confirmation that this is a Kabeiro, but it has not yet been named, hence sp.
This one was about 25 to 30 mm long.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Melibe colemani Gosliner & Pola, 2012
Ghost melibe
Maximum length: 50 mm
Almost completely transparent with white filaments visible through the body wall.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Melibe digitata ( Gosliner & V.G.Smith, 2003 )
no english designation
Maximum length: 1.5 - 2.5 cm
Maximum depth: 5 - 8 m
Transparent brown to greenish-brown body.
The cerata with their branched papillae resemble brown algae and are darker than the body,
This makes this snail very well camouflaged.
Food: Small crabs, shrimps and other Crustacea, which are sucked in and eaten.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Melibe viridis Kelaart, 1858
Green melibe
Maximum length: 200 mm
Transparent brown - green body.
They look more like an algae than a snail.
Found on sandy bottoms at a depth of 2 - 15 metres
Came from the Mediterranean through the Suez Canal into the Indo Pacific
and is now the most common Melibe in these waters.
Photos 1 - 4 Johnny: Bangka Island North Sulawesi
Moridilla brockii Bergh, 1888
Orange moridilla
Maximum length: 40 mm
White to orange body, rhinophores orange or white.
Photo 1 Johnny: Bangka Island North - Sulawesi
Phestilla melanobrachia Bergh, 1874
Cup coral nudibranch or Black armed aeolid
Maximum length: 50 mm
Variable colours: Yellow, orange or black, depending on the colour of the prey it takes.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Yellow-tipped phyllodesmium
Maximum length: 50 mm
Grey, yellowish or bluish body, with yellow tips on the extremities.
Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi
Phyllodesmium jakobsenae ( Burkhardt & Wägele, 2004 )
Jakobsen's Phyllodesmium
Maximum length: 2 - 3 cm
Maximum depth: 17 m
It is a nudibranch that imitates the appearance of xenia, lives on them and feeds on them.
It is a so-called “solar powered sea slug” that absorbs zooxanthellae when feeding, stores them in its body for a while and uses them for photosynthesis.
Photo 1 Johnny: Bangla Island North Sulawesi
Solar-powered phyllodesmium or Long-cirri phyllodesmium
Maximum length: 140 mm
The body is transparent white to bluish with grey, brown to orange pustules all over the body.
The appendages are exceptionally large and flat.
Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi
Phyllodesmium magnum ( Rudman, 1991 )
Great Phyllodesmium
Maximum length: 13 cm
This thread snail is probably the largest Phyllodesmium species.
Its body color is normally translucent white to cream-colored,
but can also become dark brown depending on the concentration of zooxanthellae.
The cerata are yellow ventrally, but can also be dark brown.
Their rhinophores and oral tentacles are white or yellow, but can also appear dark brown.
On the dorsal surface of the cerata, the tail, the rhinophores, the oral tentacles
and parts of the head are often purple in color.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Phyllodesmium pinnatu ( E.Moore & Gosliner, 2009 )
No english designation
Maximum length: 1.5 - 6 cm
Maximum depth: 0 - 34 m
Grey colored body, with faint white oval markings in the middle part of the back.
The oral tentacles, cerata and rhinophores are slightly darker compared to the color of the dorsum.
Photos 1 - 2 Johnny: Bangka island North Sulawesi
Phyllodesmium poindimiei Risbec, 1928
Pink and purple Phyllodesmium
Maximum length: 40 mm
Transparent somewhat pink, with purple and white dots on the body, rhinophores and tentacles.
Photo 1 Johnny: Bangka Island North - Sulawesi
Pruvotfolia sp.
Nudibranch
It has been confirmed to me that this is an unnamed Pruvotfolia, hence no data.
Photos 1 - 2 Johnny: Bangka Island North - Sulawesi
Australian blue dragon nudibranch
Maximum length: 100 mm
Colour: Blue, green or purple.
Lives on shallow coral reefs.
Feeds on nettle ferns and leather corals.
Photos 1 - 2 Johnny: Hurghada Egypt
Photos 3 - 4 Johnny: Bangka Island North - Sulawesi
Photos 5 - 6 Johnny: El Qesir Egypt
Pteraeolidia semperi bergh, 1870
Blue dragon
Maximum length: 150 mm
There are many different species of this snail, so far they are all categorised in one category,
DNA profiles will be created in the next few years to distinguish them.
Very long, slender body, with wheel-shaped appendages.
The colour ranges from white (juveniles) to brown, orange and iridescent blue,
depending on their diet.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Photos 3 - 8 Johnny: Lembeh Strait North - Sulawesi
Orangeband nudibranch
Maximum length: 30 mm
Transparent bluish white body with yellow to orange bands
on the appendages and rhinophores just before the tip.
Very long, mostly white head tentacles.
Photo 1 Johnny: Lembeh Strait North - Sulawesi
Samla riwo ( Gosliner & Willan, 1991 )
Nudibranch
Maximum length: 1 - 3.5 cm
Maximum depth: 10 m
Their long paddle-shaped oral flattened tentacles at the ends are their special characteristics.
White granulated body color.
It has a purple and a yellowish band around its cerata.
They are found on coral rubble and sandy bottoms.
Photo 1 Johnny: Bangka Island North Sulawesi
Tergiposacca longicerata ( Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016 )
No english designation
Maximum length: 0.5 - 1.2 cm
Maximum depth: 1 - 30 m
This nudibranch was only described in 2016.
Its body is elongated, translucent and small.
Smooth and transparent rhinophores
Photo 1 Johnny: Bangka Island North Sulawesi
Trinchesia sibogae Bergh, 1905
Siboga trinchesia or Tropical gasflame
Maximum length: 35 mm
Members of this group are found in the Indo Pacific.
Almost all have smooth rhinophores.
There are fewer described than undescribed species of this genus.
Photos 1 - 2 Johnny: Bangka Island North Sulawesi
Trinchesia yamasui
Yamasu's nudibranch
Maximum length: 5.5 cm
Maximum depth: 5 - 25 m
Found in muddy areas.
Diet: Hydroids of the genus Aglaophenia.
Photos 1 - 2 Johnny: Bangka Island