Warning for swimmers after brutally mutilated tiger sharks dumped on Perth beach

WARNING - GRAPHIC CONTENT: Beachgoers are being urged to take extra precaution after three brutally mutilated tiger sharks washed up at a popular Perth swimming beach.

Fisheries and Marine officers are investigating the scene after three sharks above the maximum size limit washed up near the groyne at Sandtrax and Port Beach in North Fremantle on Wednesday afternoon.

Each shark was cut up and had its jaw removed in a suspected attempt to use the pieces to attract even larger sharks, prompting warnings for those fishing and swimming in the area.

Fisheries Minister Dave Kelly said he was disturbed by the seemingly deliberate attempt to dump the remains close to a swimming area.

"The fishing activity appears to have been targeted to attract large sharks and therefore fishers should be mindful of the concerns and safety of other water users.

"I'm concerned that fishing for large sharks on popular beaches could be attracting sharks closer to swimming areas.

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"I've asked Fisheries officers to fully investigate this matter."

Tiger sharks with an inter-dorsal fin measurement of more than 700 millimetres are protected in Western Australia.

The taking of totally protected fish, due to size limit rules, can potentially attract a fine of up to $5,000 and, if an offence is proven, an additional mandatory penalty equal to 10 times the prescribed value of the fish by weight or number would also apply.