Tom and Eileen Lonergan set off for what should have been an unforgettable day diving the Great Barrier Reef - clear skies, calm waters, and a boat full of tourists just like them. But when the dive boat returned to the shore, no one noticed they were missing.
Not at first. 
Not for two whole days, until it was discovered their belongings were still on the boat - wallets, passports, towels… untouched. And Tom and Eileen? 
Gone.
Were they forgotten in a tragic oversight… or did something else happen in those deep, endless waters?  Their disappearance triggered a massive search, sparked global headlines, and left behind a string of disturbing clues - a diver’s slate scrawled with a desperate message, a torn wetsuit washed up weeks later, and eerie diary entries that hinted at something darker beneath the surface.
No bodies were ever found. No final answers ever confirmed. Just the chilling question: how did two people vanish into the ocean without a trace… and why didn’t anyone notice until it was far too late?
Listen as we dive into the Great Barrier Reef, the case of Tom & Eileen Lonergan, and how to stay alive on vacation.

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Sources:
https://allthatsinteresting.com/tom-eileen-lonergan

https://www.dailymail.co.uk/news/article-14412847/last-diary-entries-couple-vanished-shark-infested-waters.html

https://www.undercurrent.org/UCnow/dive_magazine/2000/AustraliasLonerganTrial200001.html

https://www.ladbible.com/news/world-news/eileen-tom-longeran-diving-australia-missing-message-329704-20241125

https://historicflix.com/tom-and-eileen-lonergan/

https://www.dannydutch.com/post/lost-at-sea-the-disappearance-of-tom-and-eileen-lonergan-left-in-the-ocean-whilst-diving