On March 7, 2022 Australian Prime Minister, Morrison and Defence Minister Dutton (who just happens to be a local Member in Brisbane) announced Brisbane was one of the 3 likely sites for an Australian East Coast nuclear submarine base.
However Ben Smee, for The Guardian,reported, March 11, 2022:
"...Jellyfish expert Lisa-ann Gershwin, a leading marine biologist, says Brisbane is “close to the absolute worst place” for a nuclear submarine base, due to the conditions in Moreton Bay and the frequent jellyfish blooms.
In 2006, the US nuclear-powered supercarrier USS Ronald Reagan was forced into an emergency reactor shutdown in Brisbane after it sucked more than 800kg of jellyfish into its condensers, hindering coolant from reaching the main reactors..."
See WHOLE GUARDIAN ARTICLE HERE
Pete Comment
An additional reason not to build a nuclear submarine base at the mouth of the Brisbane River is the mass of debris flowing into the base during that river's frequent floods. Such debris could be sucked up by a nuclear sub's reactor water coolant inlet.