smooth shark, patrols the sandy inshore

Size
Length: 80–120 cm, Weight: 5–15 kg
Lifespan
15–20 years
Diet
Feeds on small crustaceans, worms and molluscs. Uses flat, pavement-like teeth to crush hard shells. Forages over sandy and muddy bottoms. Uses electroreception to locate buried prey. Feeds most actively at night in shallow waters.
Habitat
Inhabits sandy and muddy bottoms in shallow coastal waters, harbours and estuaries from 5 to 100 metres depth. Often near seagrass beds and rocky outcrops. Prefers sheltered areas with soft substrate and clear water.
Range
Found in coastal waters of North and South Islands from Northland to Stewart Island. Most common in harbours, estuaries and sandy bays. Also found in southern Australia and the Southwest Pacific region.
Endemism
Native
Main Threats
Bycatch in set nets and bottom trawls is primary threat. Recreational fishing pressure occurs in some areas. Habitat loss from coastal development and dredging impacts populations. Water quality degradation in estuaries and climate change affect nursery habitats.
Population
Populations considered stable across most of range. Caught as bycatch in target fisheries for snapper and flatfish. Also targeted by some recreational fishers. Quota management limits total catch. No species-specific stock assessment exists. Better data needed.
Conservation Status
Not Threatened
Most sharks have rough skin. This one does not. The spotted smoothhound is named for the small dark spots on its grey body. It also has smooth, scale-less skin. Run a hand along it and it feels like wet leather. Not sandpaper. That is unusual for a shark. That is the name. The texture defines the identity. It sets the species apart from its rougher cousins. Unlike the spiny dogfish, it has no venomous spines. Handle it without fear. It will not sting you. It might bite, but it probably will not. It is a gentle shark, as sharks go. The temperament is mild. The threat is low. Interaction is safe. The reputation is undeserved. It is not a monster. It is a bottom-feeder. It seeks shells, not limbs. Its flat, pavement-like teeth are adapted for crushing. Crabs, clams and other hard-shelled prey are the target. It does not tear flesh. It crushes shells. Swimming happens slowly over the sand. Clams are cracked open with flat teeth. The method is efficient. The diet is specialised. The jaw structure supports the habit. Evolution shaped the tool for the task. Harmless to humans defines its relationship with people. No recorded attacks exist. There is no reason to be afraid. Just a spotted shark with smooth skin. It does its bottom-feeder thing. It ignores swimmers. It ignores divers. It focuses on the sediment. The lack of aggression is notable. The absence of danger is reassuring. Recreational fishers often catch it from beaches and wharves. The firm, white flesh is sometimes sold as lemon fish or rig. This happens alongside the spiny dogfish. Same name, different shark. The fish shop does not always tell you which is which. Confusion is common. Labelling is inconsistent. The consumer rarely knows. The distinction is blurred. The Māori name is not widely recorded. It was likely grouped with other dogfish. Valued for its flesh, it was not specifically named. The classification was broad. The utility was primary. The specific identity was secondary. History did not preserve the detail. Modern taxonomy provides the clarity. The past remains vague. Populations are considered stable. No formal stock assessment exists. It is caught as bycatch in bottom trawl and set net fisheries. No one targets it specifically. A shark that nobody wants shows up in nets set for other fish. The catch is incidental. The value is low. The survival rate is high. The pressure is minimal. The status is secure. For now. That is the spotted smoothhound. Spotted, smooth and harmless. A shark that feels like leather. Eats like a clam crusher. Ends up on your plate as something else. It carries on in the shallows. Unseen. Unvalued. Unafraid. The ocean holds many such creatures. Hidden in plain sight. Waiting for the net. Or not. The choice is random. The outcome is uncertain. The shark persists.