Nurse Shark

To capture high-quality footage of a nurse shark with an underwater trail camera or a stationary action camera, placement is everything. These are benthic (bottom-dwelling) animals, so your camera should be mounted within 12 to 24 inches of the seabed. Look for 'high-traffic' areas such as the mouth of a coral cavern, the underside of a coastal dock, or a narrow channel between mangrove roots. Angle the lens slightly downward to ensure you catch the shark's face as it 'walks' along the bottom using its pectoral fins.

Since nurse sharks rely heavily on their sense of smell, using a scent lure is the most effective way to guarantee a 'visit' to your camera. Place a perforated bait box containing oily fish like mullet or mackerel about 3 to 5 feet in front of the lens. The sharks will follow the scent trail and often spend several minutes investigating the source, providing excellent opportunities to record their unique suction-feeding behavior and the movement of their sensory barbels.

Lighting is a critical factor for these nocturnal creatures. While white light can sometimes startle marine life, nurse sharks are relatively hardy. However, for the most natural behavior, use a camera equipped with high-intensity infrared (IR) LEDs. If you are filming in a backyard canal or near a dock, ensure the camera is weighted properly or secured to a pylon; the powerful suction and movement of a 200-pound shark can easily knock over an unsecured tripod or mount.

Finally, maintenance in saltwater is vital. Ensure your camera housing is rated for the depth and salt exposure. After every deployment, soak the entire unit in fresh water for at least 30 minutes to dissolve salt crystals that can ruin seals. Check the tide charts before setting your gear; the best footage usually occurs during high tide when sharks move into shallower areas to forage, or during the slack tide when water clarity is at its peak.