Fish nocturnal

Blind Shark

Brachaelurus waddi

The hardy 'eyes-shut' wanderer of the Australian coastline. A master of the tide pools, the Blind Shark is a fascinating example of evolution's ability to bridge the gap between deep water and the shoreline.

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Quick Identification

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Size

Typically ranges from 60 to 120 cm (2 to 4 feet) in length.

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Colors

Dull brownish to greyish-brown upper body, often adorned with numerous small white spots; juveniles display dark horizontal bands.

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Key Features

Prominent sensory barbels located near the nostrils
Eyes that retract or close when the shark is out of water
Two dorsal fins of nearly equal size located far back on the body
Short, blunt snout with a stocky, flattened profile

When You’ll See Them

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Activity pattern nocturnal

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Peak hours 10 PM - 3 AM

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Season Year-round

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Diet A carnivorous scavenger and hunter that eats small bony fish, crabs, shrimp, sea anemones, and squid.

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Habitat Rocky reefs, coastal shorelines, and seagrass beds; frequently found in intertidal zones and tide pools.

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Behavior

The Blind Shark is a resilient, bottom-dwelling species known for its remarkable ability to survive out of water for up to 18 hours. This adaptation allows it to endure being trapped in shallow rock pools as the tide recedes. Despite its name, the shark is not actually blind; it earned the name because it reflexively shuts its thick lower eyelids when removed from the water by fishers.

During the day, these sharks are quite sedentary, wedging themselves into tight rocky crevices or under thick kelp canopies to hide from larger predators. At night, they become active foragers, prowling the seafloor with a slow, undulating swimming motion. While they are generally docile and harmless to humans, they are known to be 'tenacious' if handled, often suctioning onto surfaces or nipping if provoked.

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Camera Tips

To capture a Blind Shark on camera, you will need a waterproof action camera or a specialized underwater housing with high-quality infrared (IR) or low-light capabilities. Since these sharks are strictly nocturnal, standard white light may startle them or cause them to retreat into crevices; using a red-light filter or dedicated IR LEDs is the best way to observe their natural foraging behavior without interference.

Position your camera in a shallow rock pool known to remain filled during low tide, or along the edge of a rocky reef. Use a weighted base or a 'gorilla' style tripod to secure the camera just a few inches above the sandy floor, facing a known crevice or a narrow channel between rocks. These 'intertidal highways' are the routes the sharks use to move into the shallows as the tide rises.

Baiting is highly effective for this species due to their sensitive olfactory system. Place a perforated PVC pipe or a mesh 'burley' bag filled with oily fish (like sardines or mackerel) about one meter in front of the lens. The scent will draw the shark out of hiding, often resulting in footage of them using their nasal barbels to 'taste' the water and locate the source of the smell.

Be mindful of the tide cycles when setting your equipment. The best footage is often captured during the two hours surrounding high tide at night, as this is when the sharks are most active and confident in moving across the reef flats. Ensure your camera is set to a high frame rate (at least 60fps) to capture the fluid, eel-like movement of their bodies as they navigate the rugged terrain.

Similar Species

Species that look similar or are commonly confused with Blind Shark.

Bluegrey Carpetshark

Smaller and lighter in color, usually appearing blue-grey rather than brown, and prefers slightly deeper water than the Blind Shark.

Frequently Asked Questions

Blind Sharks are strictly nocturnal, meaning they are most active during the darkest hours of the night, typically between 10 PM and 3 AM, when they emerge from rocky caves to hunt.

The most effective way to attract a Blind Shark is using scent. A mesh bag filled with oily fish like sardines or tuna placed in the camera's field of view will lure them out of their hiding spots.

They are generalist predators that feed on a variety of seafloor inhabitants, including small fish, crustaceans like crabs and shrimp, and various mollusks.

Yes, they are very common along the eastern coast of Australia, often found right off the beaches and rocky headlands of major coastal cities like Sydney and Brisbane.

While similar, the Blind Shark is usually brown with white spots, whereas the Bluegrey Carpetshark has a distinct grayish hue and lacks the numerous white spots of its cousin.

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