what are shark nets used for

No bait is used to attract sharks to the nets.

The majority of shark nets used are gillnets, which is a wall of netting that hangs in the water and captures the targeted sharks by entanglement. Shark nets do not extend to the ocean floor despite some misconceptions. However, some argue that as soon as an animal becomes caught in a net, it could attract sharks to the area. However SMART drum lines can be used to move sharks, which greatly reduces shark and bycatch mortality.

500 m from, and parallel to, the shore. Unlike the long-line and gill-net designs commonly used in Australia and South Africa, these are permanent installations and work as barrier nets. The nets are 150 metres in length, 6 m high and are set in 10–12 m of water approx. There have been zero fatalities since installation in 1995. (Supplied: Queensland Government)Government contractors check the nets for sharks and non-target species such as turtles, dolphins and whales. In Hong Kong, after three swimmers were killed by sharks in 1995, the government installed shark nets on gazetted beaches. Shark nets operate by entangling sharks that swim into them by chance.

Drum lines are often used in association with shark nets, with the intent of killing sharks. This includes total shark numbers and numbers of three key target species: white shark (also known as great white or white pointer), tiger shark and bull shark. Many locations around the world have implemented shark nets in response to shark attacks or frequent shark sightings, particularly in areas that surfers and swimmers are most prevalent.

The purpose of these nets is to protect swimmers and surfers from dangerous and aggressive species (such as the Great White Shark and Bull Shark). Total shark catch per 100 net …

Shark control equipment (nets and drumlines) placed at beaches along the Queensland coastline Science and research to improve the effectiveness of shark control equipment, reduce the impact on non-target marine animals and investigate the potential application of alternative technologies for mitigating shark … The nets may be as much as 186 metres (610 ft) long, set at a depth of 6 metres (20 ft), have a mesh size of 500 millimetres (20 in) and are designed to catch sharks longer than 2 metres (6.6 ft) in length. In New South Wales, shark nets are set on 51 beaches spanning 200 kilometres of coastline. The use of drum lines has been successful in reducing shark attacks in the areas where they are installed. The purpose of the shark nets is to help prevent the risks sharks pose to humans by reducing shark populations. As of 2014, shark nets are in place at 32 Hong Kong beaches.

Otherwise, the nets just rely on sharks swimming into them and becoming entangled. Shark nets have been used in Queensland since 1962. Advertisement.

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