The Opposition Fisheries spokesman Dave Kelly says a record number of people have made submissions to the Environmental Protection Authority opposing WA's shark cull.

He said the Environmental Protection Authority had received 12,000 submissions opposing the cull on environmental grounds.

Mr Kelly said it was an unprecedented response to an environmental issue in recent times and the government should cease the cull immediately.

"Twelve thousand people putting in a submission I suspect that would be the largest number of submissions that the EPA has had for any environmental issue," he said.

"I can't think of another environmental issue that would generate anywhere near that number of submissions."

Mr Kelly said 26 sharks had been killed under the program in three weeks, which will equate to 300 sharks if the program runs for eight-months from September to April.

"The EPA should subject the program to a full environmental assessment and while that is taking place the EPA has the power to suspend the program and that is what should happen."