In 2011, New South Wales sank ex-HMAS Adelaide off the Central Coast; five years of surveys identified 62 fish species from 31 families around the wreck before storm damage led to its closure in July 2024

In mid-2024, severe storms wreaked havoc on the ex-HMAS Adelaide artificial reef, leading to significant structural concerns. The superstructure became disconnected from its hull, posing dangers for divers. Consequently, the site was closed in July 2024 to ensure safety. Although the hull remains largely intact, floating debris continues to threaten safety, prompting authorities to explore options for debris removal or a controlled collapse.