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What

Oriental Small-clawed × Smooth-coated Otter Hybrid Aonyx cinereus × Lutrogale perspicillata

Observer

xia0gui

Date

September 6, 2019 04:57 PM AWST

Description

Smooth coated otter - Head and body to 75cm, tail to 45cm. Long body and a long tail, covered in short sleek fur. It has short limbs with webbed 'fingers' and prominent claws. The upperparts are greyish brown and the underside is buffy.

Smooth-coated otters are generally social and live in pairs or family groups of parents and their young. They are active both during the day and at night.

Photos / Sounds

What

Southeast Asian Water Monitor Varanus salvator ssp. macromaculatus

Observer

xia0gui

Date

September 6, 2019 04:56 PM AWST

Description

Malayan water monitor - 2.5-3m long. Among the largest lizards in the world, certainly the largest reptile in our marine habitats. A robust, muscular body with a long tail that is flattened towards the slender tip. It has a slender forked tongue. The nostrils are located close to the tip of the long and slender snout. It has small non-overlapping scales on a thick leathery skin. Hatchlings are black with whitish undersides with rows of bright yellow spots forming bands along the back and tail. This pattern fades in adults which is often plain grey. Non-venomous and shy of humans, it will prefer to flee than to fight. But if cornered, it may bite. So do leave the monitors alone.

Photos / Sounds

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What

Perch-like Fishes Order Perciformes

Observer

xia0gui

Date

September 2, 2019 02:24 PM AWST

Description

Kops' glass perchlet - To about 10cm, those seen about 5-8cm. A silvery almost transparent body. There is a distinctive black mark on the tip of the dorsal fin.

Photos / Sounds

What

Little Leaf-sheep Nudibranch Costasiella kuroshimae

Observer

xia0gui

Date

September 3, 2019 10:34 AM AWST

Description

Strawberry slug - To about 1cm or smaller. Short, soft body with lots of short finger-like projections (cerata) that are transparent at the tips and filled with green stuff. Some have black spots, others with white stripes on the cerata. Tiny black eyes close together between the pair of long rhinophores. No oral tentacles.

Photos / Sounds

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What

Indo-Pacific Sand Star Archaster typicus

Observer

xia0gui

Date

September 3, 2019 01:42 PM AWST

Description

Common Sea Star - Adults diameter with arms to about 12-15cm. Smaller juveniles are rarely seen. Body somewhat rounded (not flat). Arms long and tapered to a sharp tip, and edged with short flat, blunt spines. Most have five arms, but those with three, four and six arms are sometimes also seen.The underside is pale, with large tube feet tipped with suckers. Colours and patterns on the upperside are highly variable in shades of greyish blue, to brown and beige.

Photos / Sounds

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Observer

xia0gui

Date

September 2, 2019 01:42 PM AWST

Description

Big pimply onch slug - 4-5cm. Body hard, broad and rather flat, sometimes with a raised hump along the centre of the body. Skin with many irregular bumps and pimples. Generally beige, brown to grey. Sometimes with spots in darker shades. The eyes are held on short stalks that stick out from under the tough pimply body. Most other snails have eyes at the base of tentacles.

The underside of the body may have a bluish or greenish tinge, the narrower foot is beige.

Avoid touching it as it is very slimy and generally slips out of your hands to bounce away among the rocks. Such slugs may get hurt.

Photos / Sounds

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Observer

xia0gui

Date

September 3, 2019 11:08 AM AWST

Description

Banded frilly anemone - Diameter with tentacles extended 8-12cm. Tentacles with many fine 'branches' that are bright yellow or white, forming contrasting bars across the usually darker tentacles. Generally all the tentacles are same colour usually brown or greenish. Oral disk with radiating pale lines and small dark spots.

Photos / Sounds

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Observer

xia0gui

Date

September 3, 2019 11:08 AM AWST

Description

Dawn flatworm - 5-8cm long. Usually with deep ruffles. Body dark brown to black. Margin in three colours: thin white line on the outermost edge, a transparent greyish band in the middle and orange band innermost next to black body. Centre of the body is raised, with a short grey or white stripe on the head. Underside uniformly semi-translucent grey with fine white margin. It has a pair of erect pseudotentacles at the front made up of folded edges of the body but lacks the marginal banding found in the rest of the body. The pseudotentacles are all black with white tips.

Photos / Sounds

Observer

xia0gui

Date

September 2, 2019 01:06 PM AWST

Description

Starry mouthed nudibranch - 1-3cm long. Body long, narrow and somewhat cylindrical, pale or white with net-like pattern of red lines. Two rows of finger-like appendages along the body, not true cerata. These appendages are usually orange tipped, and protect feathery white gills, and conical orange rhinophores. The oral tentacles near its mouth have star-like or hand-like tips. 'Stellifer' means 'star-like'. It is said to be able to swim by flexing its long body from side to side.

Photos / Sounds

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What

Little Leaf-sheep Nudibranch Costasiella kuroshimae

Observer

xia0gui

Date

September 2, 2019 11:35 AM AWST

Description

Strawberry slug - To about 1cm or smaller. Short, soft body with lots of short finger-like projections (cerata) that are transparent at the tips and filled with green stuff. Some have black spots, others with white stripes on the cerata. Tiny black eyes close together between the pair of long rhinophores. No oral tentacles.

Photos / Sounds

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What

Crab-eating Macaque Macaca fascicularis

Observer

xia0gui

Date

September 2, 2019 10:25 AM AWST

Description

Long-tailed macaque - Head and body to 45cm, tail to 56cm. Long limbed and long tailed indeed, it has soft silky fur olive brown above and paler below. The face is greyish with prominent white eyelids.

These macaques are social and live in large groups of about 30 individuals including 2-4 adults and 6-11 females and their young.

Photos / Sounds

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What

Common Hairy Crab Pilumnus vespertilio

Observer

xia0gui

Date

September 3, 2019 11:08 AM AWST

Description

Common hairy crabs - Body width 3-5cm. As its name suggests, the hairy crab is indeed quite hairy. Its body and limbs are covered with long, silky hairs. These trap sediments allowing the crab to blend perfectly with its surroundings. In the water, its hairs 'fluff up' breaking up its body outline. It also moves slowly and thus overlooked as some bit of drifting rubbish. It has large claws, with black or brown tips. It has reddish eyes.

Photos / Sounds

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What

Black Longspine Urchin Diadema setosum

Observer

xia0gui

Date

September 3, 2019 10:21 AM AWST

Description

Long-spined black sea urchin - Body diameter 8-10cm. It has very long primary spines, up to 30cm long, with many shorter spines in between. The spines on the underside are much shorter. The urchin can rapidly point its long spines against any potential threat (which is quite a scary thing to observe). The spines may be all black, banded black-and-white or even all white.

There is bulbous sac in the middle of the upperside. This is the anal cone through which wastes are discharged. There is an orange ring around this anal cone, sometimes the ring is pale. There are five bright white spots on the black body, with small bright blue dots forming V-shape lines from the white spots. The underside may be pale, dark or maroon or pink.

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