90 photos - 41 species


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


Coryphellina exoptata Gosliner & Willan, 1991

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


Phyllodesmium briareum Bergh, 1896

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


Phyllodesmium longicirrum Bergh, 1905

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


Pteraeolidia ianthina Angas, 1864

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

Juvenile
Juvenile

 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


Samla bicolor Kelaart, 1858

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