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‘Fascinating’: Red Crabs Marching on Christmas Island

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The welcome mat has been rolled out for scores of red crabs as the creatures begin their annual coastal dash on Christmas Island. Each year, the first substantial rain of the wet season triggers tens of millions of adult red crabs to leave their forest homes in the interior of the island and march towards the coast to mate and spawn. Christmas Island is 1,500 kilometres from the Australian mainland, and lies 350 kilometres south of the Indonesian island of Java. Christmas Island National Park staff have spent months preparing for the mass migration, setting up kilometres of temporary roadside barriers to channel the migrating crabs to the safety of underpasses and overpasses....

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