Local communities will join others across the country this Saturday for the Fight For The Bight National Day of Action.
Penong, Streaky Bay and Elliston are among the towns to be hosting an event as the push to keep oil companies such as Equinor out of the Great Australian Bight continues.
The Elliston group will be at the Elliston jetty from 9.30am, while at Streaky Bay the paddle out will take place at the jetty from 10.30am.
The Penong group will be at the Point Sinclair jetty from 12pm.
Those attending are encouraged to bring a paddling vessel if they want to get into the water, or can show their support from the jetty.
Elliston's Anna Taylor said anybody who was concerned about Equnior's planning drilling in the Great Australian Bight was welcome to attend.
"Come along to show your support," she said.
"At this event you can stand on the jetty, you don't have to be a surfer - bring your water craft and wetsuit if you want to get in the water.
"Make a banner with your message if you can, but most importantly bring yourself and others."
She said they aimed to have a photo of a "vibrant crowd" near or on the jetty to send a clear message to Norway.
Streaky Bay's Heath Joske, a surfer and fisherman, said an oil spill would be a "catastrophe" and would "devastate" marine life and local industries.
"The fishing industry, aquaculture, tourism; they'd all be threatened and for what? So that a Norwegian fossil fuel company can turn a profit," he said.