Shark drum lines have been set for a second day off Warnbro Beach, south of Perth, after the WA Fisheries Department deemed a tagged great white shark a danger to the public.

The shark was detected by the Warnbro Sound receiver again this morning after having been recorded within a kilometre of the shore over consecutive days.

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If the shark is caught alive, it will be shot.

Fisheries has been monitoring the shark closely for the past fortnight, but it had not been deemed a serious threat until now.

The Greens have called on the Government to rescind the catch-and-kill order amid concerns it would set a precedent.

“If they do catch it and kill it, it will be the third shark under the agreement between the Commonwealth and the state on the imminent threat policy,” Greens spokeswoman Rachel Siewert said.

“The public has not seen any of the agreement yet, we haven’t seen the approval process or what the terms of the agreement are.

“It is entirely inappropriate for them to be using the tagged monitoring system to then target a shark and kill it.

“The Government is responding in an inappropriate manner and they need to rescind this order.”

Earlier this year, the WA Government rolled out a 13-week trial of baited drum lines near popular beaches.

It lodged an application under federal environment law to extend the program for another three years, but in September Premier Colin Barnett announced he would not pursue the policy after the Environmental Protection Authority recommended against its continuation.

Mr Barnett said an agreement had been reached with the Commonwealth that would ensure the State Government could take immediate action if a shark was posing a threat, or following an attack.