Overview Species Guide Regulations Licenses Fisheries Data

Dusky Shark

Carcharhinus obscurus

Also known as

Brown Shark

IUCN status

Endangered

About the Dusky Shark

The Dusky Shark is a large, powerful requiem shark with a robust body and a moderately rounded snout. It typically sports a bronze-grey to bluish-grey back fading to a clean white belly. Anglers can identify it by its prominent dorsal fin, long, slightly falcate pectoral fins, and the presence of an interdorsal ridge between its two dorsal fins. Its sleek, hydrodynamic form signals its strength and speed.

Source: FishBase & iNaturalist

Habitat

This adaptable apex predator inhabits tropical and warm-temperate continental seas across the globe. You can find Dusky Sharks from inshore coastal waters out to the edge of the continental shelf and into adjacent pelagic zones. They are known to venture to depths of at least 400 meters (1,300 feet).

Distribution

Dusky Sharks are found worldwide in continental waters, undertaking impressive seasonal migrations. They move towards the poles during summer months and retreat towards the equator in winter, covering vast distances of hundreds to thousands of miles.

Behaviour

As a generalist apex predator, the Dusky Shark preys on a wide variety of fish, including bony fish, smaller sharks, rays, and even squid and crustaceans. They are strong, persistent swimmers, often seen cruising alone or in small, loose groups. Their extensive seasonal migrations are a key aspect of their life cycle, driven by changes in water temperature and food availability.

Edibility

★★★★★

Dusky Shark meat is firm and meaty, often sold as steaks or 'flake' once processed. However, like many sharks, it requires proper bleeding and icing immediately after capture to prevent the build-up of urea, which can impart an undesirable ammonia taste.

Lure suggestion

Targeting Dusky Sharks demands heavy-duty tackle, including stout rods, large reels spooled with heavy braided line, and a strong wire leader. Large cut baits, such as mackerel, tuna, or bonita, are highly effective, presented on large, strong circle hooks. Chumming can significantly increase your chances, drawing these powerful sharks closer to your vessel.