Maximum length: 80 mm

This worm is a predator that is active in the dark.

It kills snails and small hermits by enveloping them and sucking them in.

Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: 55 mm

The basic body colour of the swirl worm is intense yellow.

There are different nuances in the colour intensity of the large spots.

They range from brownish to black.

Eurylepta with the dark, almost black spots mimics the nudibranch Phyllidia polkadotsa

(a species of warty snail).

Both look confusingly similar.

Photo 1 Johnny: Bangka Island North - Sulawesi

Photo 2 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: ?

Exact ID not yet possible, as not yet described.

White body, with orange mantle edge with black border.

Photo 1 Johnny: Bangka Island North Sulawesi

 Maximum length: ?

Exact ID not yet possible as not yet described.

Grey - cream body, with two broad black stripes edged with grey and yellow mantle edge.

Photo 1 Johnny: Bangka Island North Sulawesi

 Maximum length: 22 mm

Maximum depth: 5 - 20 m

Mostly found singly or in pairs in coral reefs

and rocky reefs under sand and rubble.

By using tiny hairs on the ventral side like little feet,

the worm is able to move quite quickly.

This speed benefits the animal when catching prey,

as it pushes itself completely over its victims and then sucks them dry.

Photos 1 - 2 Johnny: Bangka Island North - Sulawesi

 Maximum length: 35 mm

Edge strongly wavy. They have 3 to 5 female and 2 male genital pores.

Photo 1 Johnny: Embudu Maldives

 Maximum length: 6 cm

This flatworm is known as the Persian carpet whirlpool worm,

which fits its pattern quite well.

Photo 1 Johnny: Bangka Island North Sulawesi

 Maximum length: 80 mm

Maximum depth: up to 20 metres

A beautiful swirl worm, a strong yellow band runs around the outside of the body,

followed by a somewhat difficult to recognise red band,

before the beautiful fuchsia colour and the small white dots make up the rest of the body.

Photos 1 - 2 Astrid: Lembeh Strait North - Sulawesi

Photo 3 Johnny: Lembeh Strait North - Sulawesi

Maximum length: 100 mm

This whirlpool worm has a brown body with a white and yellow border.

It feeds on colonial sea squirts.

Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: 80 mm

Maximum depth: 23 m

This very pretty whirlpool worm is widespread in the Indo-West Pacific

and lives there under rubble and sand in rocky reefs.

Diet: Snails, mussels and sea squirts. 

It is particularly striking due to its intensely wavy mantle edge.

The colour varies from a light olive green to dark brown to black.

A light-coloured longitudinal line is clearly visible in the centre.

Oval body with tapering towards the rear.

Photos 1 - 2 Johnny: Bangka Island North - Sulawesi

 Maximum length: 40 mm

Maximum depth: 2 - 25 m

As you can see from the pictures, this worm can be found on stony,

rocky grounds where the animal quickly finds sufficient protection from predators.

The colouration varies between a blotchy olive green

and a chalky greenish white with large irregular brown and olive green spots

on the edge and large irregular orange-brown and white spots scattered over its dorsal side.

The ventral side is light olive green. 

Photos 1 - 2 Johnny: Bangka Island North - Sulawesi

 Maximum length: ?

Maximum depth ?

Unfortunately I couldn't find out anything about this species,

maybe it will be described sometime.

Photo 1 Johnny: Bangka Island North - Sulawesi

Maximum size: 5 cm

Maximum depth: ?

Black body with a bright yellow centre line and radiating lines towards a yellow edge.

Found in shallow water in about 8 metres under a reef top.

Photo 1 Johnny: Bonaire Caribbean

Photo 2 Johnny: Bonaire Caribbean 

 Maximum size: 4.5 cm

Maximum depth: 1 - 11 m

Not much is known about this species either.

Occasionally the white edge is coloured greenish yellow.

Photos 1 - 2 Johnny: Bonaire Caribbean

 Maximum length: 100 mm

Maximum depth: 2 - 20 m

Often found in shallow lagoons and shallow reefs.

The white to cream-coloured whirlpool worm has 3 characteristic edge bands

that run from the inside to the outside in yellow-green, black and orange.

Some of them have a thin white centre line.

It has pseudotentacles.

Photos 1 - 3 Johnny: Bangka Island North - Sulawesi

 Maximum length: 80 mm

There are 2 variants of them, black with yellow stripes and yellow with black stripes,

unfortunately I have only seen this variant so far.

The fringe is orange.

It lives in sheltered lagoons and bays.

Photo 1 Johnny: Lembeh Strait North - Sulawesi

Photos 2 - 3 Johnny: Hurghada Egypt

 Maximum length: 60 mm

The white whirlpool worm with its distinctive blue spots can be found

between mangrove roots, but also near the coast in muddy intertidal areas,

under stones and dead oysters.

As a food specialist, it feeds on white and yellow colonial sea squirts.

The name ‘indicus’ is derived from the Latin word meaning ‘blue ink’.

Photo 1 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: 80 mm

Maximum depth: 27 metres

As this worm has a warning colouration ( aposematism ),

which signals that it is inedible, it can be active on the reef during the day,

although with its size of up to 80 mm it could make a good snack for predators.

Diet: Sea squirts, the poison of which it stores in its own body.

Burgundy base colour, with large, irregularly distributed, oval to round,

golden-yellow spots.

Blue mantle edge.

Widely distributed in the Indo-Pacific and, like snails, a hermaphrodite,

i.e. two flatworms are able to fertilise each other,

as each animal has both a penis and a vagina.

Photos 1 - 2 Johnny: Bangka Island North - Sulawesi

Maximum length: 60 mm

Blue body with a white centre stripe and dark edge lines

There is an orange spot on the front of the stripe.

Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: 50 mm

Maximum depth: 2 - 23 m

Only becomes active at nightfall, then goes in search of food.

Its body is cream-coloured, followed by a broad black stripe

and then a thinner yellow stripe.

Photos 1 - 2 Bangka Island North - Sulawesi 

Maximum length: 60 mm

Maximum depth: 2 - 15 m

Diet: colonial sea squirts.

Basic body colour black, with a distinctive yellow to orange edge and large,

irregular yellow-green spots.

There is a whole range of colour variants with different patterns.

Photo 1 Johnny: Bangka Island North - Sulawesi

 Maximum length: 5 cm

White body with orange margin and irregular black spots. 

Photo 1 Johnny: Bangka Island North Sulawesi

 Maximum length: 3.5 cm

White body with yellow mantle, yellow stripe in the centre

and 2 black stripes on each side.

Probably warning colours for predators.

Photo 1 Johnny: Bangka Island North Sulawesi

Maximum length:65 mm

The swirl worm has a light blue marginal stripe, a pink body with white dots.

In the centre there is a yellow longitudinal stripe with a wine-red border.

Photos 1 - 3 Johnny: Lembeh Strait North - Sulawesi

 Maximum length: 45 mm

I cannot describe this species,

I have only found out its name so far

Photos 1 - 2 Johnny: Embudu Maldives

 Maximum length: 80 mm

Velvety black body surface framed by a white margin.

Yellow - orange coloured papillae on the body.

Photos 1 - 2 Johnny: Lembeh Strait North - Sulawesi

Photo 3 Johnny: Bangka Island North - Sulawesi

 Maximum length: 50 mm

Golden yellow papillae on a black background with a white margin.

Two pseudotentacles on the margin. Lives on rubble

and sand in lagoons and outer reefs.

Photo 1 Johnny: Lembeh Strait North - Sulawesi

Unfortunately I cannot report anything about this species

because it is undescribed.

White to yellowish body with black mantle edge. 

The animal was about 3 - 4 cm long.

Photo 1 Johnny: Bangka Island North Sulawesi

 Unfortunately I cannot report anything about this species

because it is undescribed.

Brown body with orange mantle edge, the orange is edged with black. 

A whitish spot can be seen approximately in the centre of the body. 

The animal was about 1 - 2 cm long.

Photo 1 Johnny: Bangka Island North Sulawesi

 Unfortunately I cannot report anything about this species

because it is undescribed.

Cream-coloured body with blue mantle edge. 

In the centre of the body is a blue straight band.

The animal was about 3 - 4 cm long.

Photos 1 - 2 Johnny: Bangka Island North Sulawesi

 Unfortunately I cannot report anything about this species

because it is undescribed.

Blue-black body without further characteristics 

The animal was about 4 - 5 cm long.

Photo 1 Johnny: Bangka Island North Sulawesi