Fish Active at night

Epaulette Shark

Hemiscyllium ocellatum

iNaturalist Wikipedia

Famed for its ability to 'walk' on land and survive in oxygen-starved pools, the epaulette shark is a master of the tropical reef flats.

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0 Habitats

Quick Identification

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Size

70–90 cm (27–35 in) on average, reaching up to 107 cm (42 in); weighs approximately 1–2 kg (2–4 lbs).

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Colors

Tan to light brown body with numerous small dark spots; features a prominent large black spot ringed in white behind each pectoral fin.

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Key Features

Large black 'epaulette' spot behind pectoral fins
Slender, elongated body with a tail comprising over half its length
Muscular, paddle-shaped fins used for 'walking' along the seabed
Small mouth and nasal barbels located well forward on the snout

When You’ll See Them

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Activity pattern Active at night

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Peak hours 8 PM - 4 AM

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Season Year-round

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Diet A benthic predator that 'hunts' by walking along the bottom, feeding on crabs, shrimp, small bony fish, and marine worms found in the sand or coral rubble.

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Habitat Shallow coral reefs, tide pools, and seagrass beds in tropical coastal waters.

public Geographic range

Where Does the Epaulette Shark Live?

The epaulette shark is a classic inhabitant of the Indo-Pacific, centered primarily around the northern half of Australia and the island of New Guinea. Its native territory stretches from the world-famous Great Barrier Reef in Queensland, across the Torres Strait, and into the lush marine habitats of Papua New Guinea and Western New Guinea, Indonesia. Within this region, they are highly localized to shallow reef environments and are rarely found far from the protective cover of the coast.

Basemap © OpenStreetMap contributors

3 Countries

1.2M km² Range

Least Concern Conservation

AU Australia Papua New Guinea ID Indonesia

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iNaturalist / Verified observation data

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Behavior

The epaulette shark is world-renowned for its remarkable ability to 'walk' using its pectoral and pelvic fins. This specialized locomotion allows it to navigate across coral reef flats and even travel between isolated tide pools over dry land during low tide. They are masters of survival, capable of thriving in environments with extremely low oxygen levels by slowing their heart rate and selectively powering down parts of their brain.

Primarily nocturnal, these sharks spend the daylight hours hidden away in the safety of coral crevices or beneath table corals to avoid larger predators. At night, they emerge to forage in the shallows, often in water just a few inches deep. Despite their shark lineage, they are entirely harmless to humans and tend to be quite docile, though they will swim away quickly if they feel threatened by a sudden movement or bright light.

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Camera Tips

To capture the epaulette shark on camera, you need a setup capable of handling very shallow marine environments. Since these sharks are most active during the night in tide pools, an underwater housing with a wide-angle lens is your best bet. Position the camera on a weighted tripod or a flat rock at the edge of a reef pool as the tide begins to recede. The goal is to catch the shark as it begins its nightly foraging or as it 'walks' between pools. Angle the camera horizontally to emphasize their unique gait and long, slender tail.

Lighting is the most critical factor for night-time reef photography. Use low-glow infrared (IR) lights or red-filtered LEDs to illuminate the area without startling the shark or washing out the image. Place your lights at an angle to the lens rather than directly behind it; this reduces 'backscatter' from suspended particles in the water and brings out the beautiful spotted pattern of the shark's skin. Avoid high-intensity white strobes, which can cause the shark to seek cover immediately.

While epaulette sharks are curious, they are also cautious. A light application of scent-based attractant—such as a small mesh bag of crushed crabs or shrimp secured near the focal point—can keep the shark in the frame long enough for a high-quality capture. Set your camera to a high-frame-rate video mode rather than still photos. The true magic of this species lies in its movement; seeing the way it alternates its fins to walk across the sand is far more impressive than a static image.

Always check local tide charts before deployment. The best action occurs during the 'king' low tides when the reef flats are exposed. Ensure your equipment is properly tethered to prevent it from being swept away by the incoming tide, and always rinse your camera housing with fresh water after each deployment to prevent salt corrosion.

Frequently Asked Questions

Epaulette sharks are strictly nocturnal, becoming most active after sunset. They spend their nights foraging in shallow water and return to the safety of coral crevices during the day.

Using a small amount of crushed crustacean bait, like crab or shrimp, in a mesh bag can lure them into view. Positioning your camera in shallow tide pools during low tide is the best way to find them.

They primarily eat benthic invertebrates, including crabs, shrimp, and marine worms, as well as small fish that hide in the coral rubble.

They are common along tropical coastlines near coral reefs, but they are marine animals and won't be found in traditional backyard settings unless you live directly on a reef flat in Northern Australia or New Guinea.

Look for the namesake 'epaulette'—a large black spot with a white border behind the pectoral fins. Other carpet sharks may have spots, but they lack this specific military-style marking.

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