Victoria's Game Management Authority has described the opening weekend of the duck hunting season as low-key and safe.

There were 30 infringement notices issued across the state.

The authority's Greg Hyams said officers would continue monitoring wetlands until the season ends in June.

"We have staff out constantly on various wetlands," he said.

"I'm not going to go into details about where we'll be and what we'll be doing but we have a constant presence over the next 12 weeks as do staff from Parks, the departments and Victoria Police."

The Coalition Against Duck Shooting's Laurie Levy said the group would continue its protest at Victorian wetlands, despite 10 members being banned over the weekend.

"The Government, again, is obviously embarrassed by the numbers of threatened species that are being illegally shot by duck shooters and they figure the only way to stop those birds coming in is to put banning notices on those rescuers," he said.