An Australian company has launched a new product that it says works as an invisible sharknet.

The Ocean Guardian Boat01 is a bouy that sits in water powered from a boat that creates an electrical field to a depth of about 8 metres which interferes with a sharks sensory organs.

Ocean Guardian CEO Lindsay Lyon tells Mark the device could of prevented the attack that killed 33 year medico Daniel Christidis in the Whitsundays late last year.

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