Fish nocturnal

Hooded Carpetshark

Hemiscyllium strahani

Meet the 'walking shark' of the Pacific. With its striking dark hood and incredible ability to crawl over coral, the Hooded Carpetshark is a rare nocturnal treasure of the reef.

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Quick Identification

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Size

Reaches a maximum length of 75 cm (approx. 29.5 inches); typically weighs between 1.5–3 kg (3.3–6.6 lbs).

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Colors

Distinctive dark 'hood' covering the head and gill region; body is dark brown to black with a dense pattern of small, bright white or cream spots.

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Key Features

Solid dark 'hood' mask over the head and gills
Muscular, paddle-like pectoral fins used for 'walking'
Elongated body with white leopard-like spotting on a dark base

When You’ll See Them

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Activity pattern nocturnal

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Peak hours 8 PM - 3 AM

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Season Year-round

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Diet Benthic invertebrates including small crabs, shrimp, and mollusks, as well as small bony fish hiding in the reef.

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

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Behavior

The Hooded Carpetshark is a fascinating, ground-dwelling species that spends its life navigating the complex structures of coral reefs. Unlike most sharks that must swim constantly to move water over their gills, this 'bamboo shark' has adapted to life in the shallows and tide pools. It is most famous for its ability to 'walk' on the seafloor. By using its thick, reinforced pectoral and pelvic fins as limbs, it can clamber over coral heads and maneuver through narrow crevices that would be inaccessible to more traditional swimmers.

Primarily solitary and nocturnal, these sharks are masters of the night. During the day, they remain tucked away in reef 'apartments'—deep holes or ledges—to avoid predators. They are entirely harmless to humans and are known for their docile nature. However, because they are so slow-moving and visually striking, they have become highly sought after in the illegal aquarium trade, which has unfortunately contributed to their status as an endangered species.

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Camera Tips

Capturing the Hooded Carpetshark requires specialized underwater equipment, as this species rarely ventures into deep water. Use an underwater-rated trail camera or a waterproof housing for a standard action camera with an external battery pack. Because these sharks are strictly nocturnal, your lighting setup is the most critical factor. Use high-quality infrared (IR) illuminators if possible; white light can cause 'backscatter' (reflecting off particles in the water) and may spook the shark, though they are generally less sensitive to light than deeper-water species.

Placement is key to a successful 'trap.' Look for 'reef gutters'—the sandy channels between coral outcrops—or the edges of shallow tide pools during high tide. Secure your camera just 6 to 12 inches off the substrate, angled slightly downward. This low perspective is essential for capturing their unique walking gait. Ensure the camera is weighted or strapped to a heavy rock to prevent it from being moved by the surge or currents.

To guarantee a sighting, use a scent-based lure. A perforated PVC tube filled with crushed oily fish, like sardines or mackerel, or smashed crustaceans will create a 'scent plume' that travels through the water. Secure the bait station roughly 3 to 5 feet in front of the lens. The shark's keen sense of smell will lead it directly to the source. Because they move slowly, set your camera to record longer video clips (30–60 seconds) rather than photos. This allows you to observe the mechanical movement of their fins as they 'step' toward the bait.

Seasonally, these sharks are active year-round in their native range of Papua New Guinea. However, you will have the best visibility during the dry season when there is less sediment runoff from the land. Aim for deployments during the new moon phase; the lack of moonlight encourages these shy sharks to venture further out into open sandy patches where your camera will have a clear, unobstructed view.

Similar Species

Species that look similar or are commonly confused with Hooded Carpetshark.

Epaulette Shark

Lacks the dark 'hood' and features a large, singular black 'eye spot' behind the gills.

Speckled Carpetshark

Has a more uniform pattern of dark spots rather than white spots on a dark background.

Indonesian Bamboo Shark

Features a much lighter brown coloration with less defined spotting and no facial hood.

Frequently Asked Questions

Hooded Carpetsharks are strictly nocturnal, with peak activity occurring between 8 PM and 3 AM. They spend their daylight hours hiding deep within coral reef crevices to avoid predators.

The best way to attract a Hooded Carpetshark is by using a scent lure, such as a mesh bag or perforated tube filled with crushed shrimp or oily fish, placed directly in front of an underwater camera in shallow reef areas.

They are bottom-feeders that primarily eat small crustaceans like crabs and shrimp, as well as mollusks and occasionally small fish that they find while foraging along the seafloor.

No, they are not found in suburban areas. They are endemic to the coastal waters and coral reefs of Papua New Guinea and require a marine environment to survive.

The Hooded Carpetshark has a distinct dark 'hood' over its head and gills and is covered in small white spots. In contrast, the Epaulette Shark has a large, prominent black spot behind each pectoral fin and larger, dark spots across its body.

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