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Why Bribie Island split in two and what happens now
Ex-Tropical Cyclone Seth has changed south-east Queensland's coastline, with massive swells buffeting Bribie Island's northern tip and splitting the island in two.
High tides and huge seas driven by Seth carved a passage through the northern end of Bribie Island at the end of last year.
Experts say the new bar could take up to 20 years to close and will eventually become the preferred entry to Caloundra.
The island's northern tip has gradually been thinning on the ocean and Pumicestone Passage sides, with the surf briefly running over the dunes into the passage during the middle of last year.
The evolving passage is now 300 metres wide with a depth of 1.5 metres at high tide and 1 metre at low tide.