This week, as midday temperatures hover near 28°C along Western Australia’s Pilbara coast, marine scientists are raising urgent concerns over the expansion of seismic testing for offshore gas exploration. Industry vessels, including the recently deployed Geo Coral, have begun intensified airgun surveys in the North West Shelf, a region hosting key populations of humpback whales, green turtles, and migratory fish.
The Australian government authorized the latest round of seismic surveys in June 2026, granting exploration rights to Woodside Energy and Santos for a combined area exceeding 15,000 square kilometers. These surveys, which use repeated underwater blasts to map subsea geology, are scheduled to continue through August, coinciding with the peak of the southern hemisphere’s whale migration season.
Robert McCauley, director of the Centre for Marine Science and Technology at Curtin University, told SDG Talking on Monday that continuous seismic activity can disrupt animal communication, feeding, and breeding, citing peer-reviewed studies that have documented elevated stress levels and mass strandings. “We’ve observed a 40% drop in local dolphin sightings within active testing zones,” McCauley noted, referencing data collected since early July 2026.
Despite industry claims of mitigation measures—such as exclusion zones and ‘soft start’ protocols—environmental groups, including the Australian Marine Conservation Society, argue these steps are insufficient. They point to the lack of independent monitoring and the absence of published post-survey impact assessments as evidence of regulatory gaps.
With the federal government reaffirming its commitment to the UN Sustainable Development Goals, particularly SDG 14 (Life Below Water), policy analysts are watching closely for measurable progress. As of this week, no comprehensive impact review has been released for the current seismic campaign, despite repeated calls from academic and NGO stakeholders.
Frequently Asked Questions
What is seismic testing and why is it happening off Western Australia’s coast?
Seismic testing involves using repeated underwater blasts to map subsea geology, and it is being conducted off Western Australia’s coast for offshore gas exploration by companies like Woodside Energy and Santos.
How much area is covered by the current seismic surveys in the North West Shelf?
The seismic surveys cover over 15,000 square kilometers in the North West Shelf region.
When is the seismic testing scheduled and what does it overlap with?
Testing is scheduled from June through August 2026, which overlaps with the peak whale migration season.
What impact has seismic testing had on marine life so far?
Marine scientists report a 40% drop in local dolphin sightings within active testing zones since July 2026.
Has the Australian government released an impact review for the current seismic campaign?
No, the federal government has not released a comprehensive impact review for the current seismic campaign despite calls from academics and NGOs.

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