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In page Harold Holt:

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Holt's disappearance sparked "one of the largest search operations in Australian history", but no trace of his body was ever found.[3] A police report released in early 1968 made no definitive findings about Holt's death, while a coronial inquest in 2005 returned a verdict of accidental drowning. It is generally accepted that Holt overestimated his swimming ability.[4] Some have alleged that Holt committed suicide, but those close to him rejected this as uncharacteristic of his personality.[5] Conspiracy theories have included suggestions that Holt faked his own death, was assassinated by the CIA, or was collected by a submarine so that he could defect to China.[6]