Australia has announced a significant expansion of the Heard Island and McDonald Islands marine park, which will quadruple its size and enhance ocean protection.

Conservation groups have praised the expansion, which prohibits fishing expansion and prevents oil and gas extraction in the area.

However, some environmental advocates have raised concerns about the lack of sanctuary-level protection for critical wildlife habitats.

Fiona Maxwell from the Pew Charitable Trusts noted that while mining and new fisheries will be restricted, some important underwater habitats remain unprotected.

Environmental advocates stress the need for increased funding for nature protection, as current government spending is only 0.1% of its budget.

This expansion brings the total area of protected seas in Australia to 52%, surpassing the 30% target set in a UN conservation agreement.

Environment Minister Tanya Plibersek emphasized that this represents the largest global contribution to marine protection in 2024.

The marine protected area has increased by nearly 310,000 square kilometers, positioning Australia as a leader in marine conservation efforts.

Australia's geographic remoteness facilitates easier ocean protection compared to other nations, particularly in less-fished areas.

Overall, this expansion is a significant step towards fulfilling Australia's commitment to global marine conservation goals.

Experts warn that without stronger protections, vital foraging grounds could still be at risk from commercial fishing activities.

This announcement follows a public consultation period and comes after the government previously expanded the Macquarie Island Marine Park.