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Shark-proof wetsuit nearing human trials

Alec Chance
Scientists are swimming towards a potentially life-saving wetsuit with research showing new fabrics can help reduce the impact of four-metre long White Shark bites.

The leading cause of death from shark bites is due to blood loss, so reducing that with a specially designed wetsuit could make the difference between life and death, according to Flinders University’s researchers in Adelaide.

“Technological advances in fabric have allowed the development of stronger, lightweight alternatives that can be incorporated into traditional wetsuits,” said Associate Professor Charlie Huveneers, who leads Flinders’ Southern Shark Ecology Group research lab.

The material used is similar to Kevlar, a heat-resistant, strong synthetic fibre typically used for bullet and stab-resistant body armour.

“Through a variety of laboratory and field tests, we found that the new fabrics were more resistant to puncture, laceration, and shark bites than standard neoprene wetsuits.

“More force was required to puncture the new fabrics, and cuts made to the new fabrics were smaller and shallower than those on standard neoprene,” Huveneers added.

Neoprene, invented in 1930, is a synthetic rubber that maintains flexibility over a wide temperature range. It is currently used to make wetsuits.

Since February, the researchers have tested the force required to penetrate the new material versus neoprene, then how both materials fare against sharks by comparing the number and size of holes and cuts they deal to the fabric.

“Although these fabrics may reduce blood loss resulting from a shark bite, further research is needed to determine if the reduction in damages to the wetsuit extends to human tissues and decreases injuries,” Huveneers said.

The NSW Government’s Shark Management Strategy supported the research, which began in February and is due to be published this year, with a grant of $90,000.

The Strategy is an investment of $16m for innovative projects that protect swimmers from shark interactions while minimising harm to sharks, according to its website.

SSEG last year conducted research into electronic shark repellent devices that overwhelm their electro-reception sensory organ.

“We recorded more than 1,400 interactions from 44 different white sharks to compare their reactions to the Freedom+ Surf device in controlled, open-ocean trials,” Huveneers said at the time.

SSEG’s website says it conducts research that supports the conservation and management of shark populations, including improving public perceptions towards sharks.

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