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Shark-proof wet suit material could reduce injuries

Shark-proof wet suit material could reduce injuries
November 19, 2019

Flinders University marine researchers have tested a new wet suit material considered to help reduce blood loss and reduce injuries caused by shark bites.

The study published in PLOS ONE tested two types of protective fabrics that incorporate ultra-high molecular weight polyethylene fibres (UHMWPE) onto widely used neoprene material in wet suits and compared their resistance to bites against standard neoprene without protective layers.

Flinders University Associate Professor Charlie Huveneers, from the Southern Shark Ecology Group, says new technological advances in fabric have allowed the development of lightweight alternatives that can be incorporated onto traditional wet suits.

Professor Huveneers advised that "the aim of this study was to assess the ability of new fabrics incorporated into neoprene to reduce injuries from White Shark bites.

"Our results showed that both fabrics tested may provide some protection against shark bite and could be used as part of a shark bite mitigation strategy.

"We tested the fabric on White Sharks because it is the species responsible for the most fatalities from shark bites."

The tests included 10 variants of two different fabrics using two laboratory tests, puncture and laceration tests, along with field-based trials involving White Sharks ranging from three to four metres.

White Shark bite force was also measured at the Neptune Islands Group Marine Park using load sensors placed between steel plates surrounded by foam.

Professor Huveneers added that “we found that the new fabrics were more resistant to puncture, laceration, and bites from White Sharks than standard neoprene.

"More force was required to puncture the new fabrics compared to control fabrics (laboratory-based tests), and cuts made to the new fabrics were smaller and shallower than those on standard neoprene from both types of test, i.e. laboratory and field tests.

Professor Huveneers advises that the results are positive but more testing is required in an incorporated wet suit design and on the potential damage to human flesh underneath for more robust recommendations.

"Although these fabrics may reduce blood loss resulting from a shark bite, further research is needed to measure the magnitude of injury to human flesh."

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