Why hundreds of scientists want more protection for Australia's oceans

Australia is renowned as a global marine conservation leader, hosting the world's most diverse marine ecosystems. Despite its extensive network of marine protected areas, evidence shows that Australia's marine biodiversity is under growing pressure. A recent review finds that while Australia has made conservation successes, many species and ecosystems have declined due to climate change, habitat degradation, unsustainable pressures, and inadequate management.

The key issue lies in the level of protection provided by marine parks. While some zones prohibit activities like commercial fishing and mining, others permit industrial uses. Strong scientific evidence indicates that highly protected, no-take sanctuary zones, where extractive activities are prohibited, support greater biodiversity, healthier ecosystems, and larger fish populations.

They also show increased resilience to climate change impacts and bring economic benefits to fisheries and tourism. The consensus statement from over 250 scientists, including 50 from The University of Queensland, demands at least 30% of each Australian marine bioregion be protected in highly protected sanctuary zones. Currently, only about 10% of mainland waters and 31% of overall waters are highly protected.

The expansion of protection in remote areas, such as Norfolk and Lord Howe Islands, highlights the stark imbalance. With the ongoing impact of climate change, coastal development, declining water quality, and pollution, it is crucial to strengthen marine park management and incorporate complementary actions to ensure the health of Australia's oceans for future generations.