anti-shark

adjective
an·​ti-shark | \ ˌan-tē-ˈshärk, ˌan-tī- How to pronounce anti-shark (audio) \
variants: or less commonly antishark

Definition of anti-shark

: serving or intended to repel sharks : providing protection against shark attacks an anti-shark cage The support boat was equipped with a special antishark electromagnetic field that in theory repelled the animals from a twenty-five-foot radius …— William H. Longyard

First Known Use of anti-shark

1905, in the meaning defined above

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The first known use of anti-shark was in 1905

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