The national regulating body NOPSEMA's decision to delay its decision relating to BP's application to drill for oil in the Great Australian Bight by 10 days is a welcome decision and should foreshadow a final, negative decision, the Australian Greens have said.

"What's needed now is a final rejection of BP's disastrous plan," South Australian Greens Senator Sarah Hanson-Young said.

"This decision will have an impact on generations of Australians and should not be rushed.

Following the release of explosive oil spill modelling from mining giant BP, their plans to drill for oil in the Great Australian Bight should be rejected, the Australian Greens have said.

"Here we have it, straight from BP themselves," South Australian Greens Senator, Sarah Hanson-Young said.

"The environmental and economic impact of a spill on the marine life, fisheries and tourism industry of South Australia would be absolutely devastating.

South Australian Greens Senator Sarah Hanson-Young will give notice today that she will introduce legislation to the Senate that would see the Great Australian Bight marine park protected from companies wanting to drill for oil and gas.

"The Parliament has to step in and make sure that this this national treasure is protected for generations to come," Senator Hanson-Young said.

"BP will put this spectacular marine park at risk and, if they're given approval, there are several other companies lining up behind them.