Fish diurnal

Silky Shark

Carcharhinus falciformis

The ultimate ocean athlete, the Silky Shark is world-renowned for its shimmering metallic skin and incredible pelagic speed. A master of the open blue, this streamlined predator is a frequent companion to tuna schools and offshore explorers.

0 Sightings

0 Habitats

Quick Identification

straighten

Size

Typically 2 to 2.5 m (6.6 to 8.2 ft) in length; maximum weight around 346 kg (763 lbs).

palette

Colors

Metallic bronze-gray on the upper body, fading to a pure white underside; no conspicuous fin markings.

visibility

Key Features

Slender, streamlined profile
Small first dorsal fin with a distinctly curved trailing edge
Long, sickle-shaped pectoral fins
Extremely smooth 'silky' skin texture

When You’ll See Them

schedule

Activity pattern diurnal

brightness_5

Peak hours 6 AM - 10 AM and 4 PM - 7 PM

calendar_month

Season Year-round

restaurant

Diet Primarily a piscivore, feeding on bony fish like tuna, mackerel, and sardines, as well as squid and the occasional pelagic crab.

park

Habitat Open ocean and deep coastal waters, particularly around underwater mounts and the edges of continental shelves.

bar_chart
Loading activity data...

Behavior

The Silky Shark is a highly mobile and inquisitive predator known for its exceptional speed and agility. Unlike many other requiem sharks that hug the seafloor, the Silky is a pelagic wanderer, often found patrolling the upper 50 meters of the water column near the edges of continental shelves. They are known for their 'bolting' behavior when feeding, lunging into schools of fish with sudden bursts of velocity. While generally solo travelers, they are known to congregate around floating objects or follow schools of tuna, occasionally forming loose social groups based on size.

In terms of human interaction, Silky Sharks are considered potentially dangerous due to their size and bold nature, though they rarely encounter humans away from offshore diving sites. They are frequent 'auditors' of fishing operations, often hanging around boats to snatch a quick meal from a line. Their name comes from the unusually fine dermal denticles on their skin, which feel remarkably smooth to the touch compared to the sandpaper-like texture of most other shark species.

photo_camera EverydayEarth exclusive

Camera Tips

Capturing a Silky Shark on camera requires an underwater setup, ideally positioned near a drop-off or a fish aggregating device (FAD). If you are using a stationary 'drop-cam' from a boat or dock in deep coastal waters, ensure your housing is rated for at least 50 meters. Because Silky Sharks are attracted to vibrations and low-frequency sounds, some enthusiasts use 'acoustic lures' or simple flashers (reflective metal plates) suspended in the water column to pique their curiosity and draw them into the camera's field of view.

Lighting is your biggest challenge in the pelagic zone. To capture the metallic bronze sheen of their skin, aim to shoot during the middle of the day when the sun is directly overhead, providing maximum natural light penetration. If you are using external strobes or video lights, angle them slightly outward to avoid 'backscatter'—the reflection of light off of tiny particles in the water—which can ruin the clarity of your shot. High-speed settings are essential; set your camera to at least 60 frames per second (fps) to catch the fluid, whip-like movements of their tail and pectoral fins.

For baiting in areas where it is legal and safe, use a 'chum bag' filled with oily fish like mackerel or sardines. Position the camera down-current from the bait bag so that the shark is filmed as it follows the scent trail directly toward the lens. Silky Sharks are known to approach cameras closely, so a wide-angle lens (15mm to 35mm equivalent) is recommended to capture the full length of the animal as it passes. Be prepared for 'test bites' on your equipment; ensure all cables are shielded and the housing is rugged enough to withstand an inquisitive bump.

Similar Species

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

Oceanic Whitetip Shark

The Oceanic Whitetip has much larger, rounded fins with distinctive white mottled tips, whereas the Silky Shark has pointed fins and a bronze sheen.

Dusky Shark

The Dusky Shark has a larger first dorsal fin that starts further forward, over the pectoral fins, and lacks the exceptionally smooth skin of the Silky Shark.

Grey Reef Shark

Grey Reef Sharks are stockier and usually have a prominent black margin on the tail fin, which Silky Sharks lack.

Frequently Asked Questions

Silky Sharks are most active during the daylight hours, particularly at dawn and dusk when they hunt schooling fish near the surface. However, they are opportunistic and will feed at night if prey is concentrated by lights or fishing activity.

The most effective way to attract Silky Sharks is using scent-based lures like fish oil or chum bags. They are also highly attracted to the low-frequency vibrations of boat engines and reflective 'flashers' that mimic the scales of shimmering prey fish.

Their diet is almost entirely composed of bony fish. They favor tuna, mackerel, and mullet, but they are also known to hunt squid and occasionally scavenge from commercial fishing lines.

While they are pelagic sharks, they are commonly found in the 'backyards' of coastal residents with deep-water access, particularly those near the edge of a continental shelf or in tropical island chains like the Florida Keys or Hawaii.

Look for the tiny second dorsal fin with a very long trailing tip and the smooth, shimmering texture of the skin. Unlike the Oceanic Whitetip, the Silky Shark lacks white mottling on its fins, and its first dorsal fin is much smaller and more curved than that of a Dusky Shark.

Record Silky Shark at your habitat

Connect a camera to start building your own species record — AI identifies every visitor automatically.

Join free Identify a photo