The annual migration of crimson crabs has introduced visitors to a standstill on an Australian island. Other than the epic journey, the species can also be infamous for consuming its personal younger.
Tens of tens of millions of crustaceans are swarming Canberra-governed Christmas Island, which is sort of a thousand miles northwest of the Australian mainland. Parks Australia, a authorities physique answerable for wildlife conservation on the island, has deployed its workers to handle visitors, rake crabs off roads and supply advisories to native residents concerning highway closures. Authorities are well-prepared to cope with the epic crab march because it repeats yearly, often in October and November. There are even particular bridges and tunnels in place, constructed over and below busy roads in order to reduce the variety of crabs crushed by automobiles. The sight of tens of millions of those creatures making their perilous trek has develop into one in every of Christmas Island’s most important vacationer points of interest.
Thousands and thousands of crabs have flooded the roads on Australia's Christmas Island pic.twitter.com/Qa2CbSzwMW
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The precise timing of the crimson crabs’ journey from forest to ocean is outlined by rainfall and lunar phases. The march is led by male crabs, that are later joined by females. On reaching the ocean, they mate and spawn, with every feminine able to producing as many as 100,000 eggs. Nevertheless, a lot of the younger crabs by no means make it again to the forest as they find yourself being eaten by fish and whale sharks for whom this can be a veritable feast. To make issues worse, the crab larvae that do make it to the seashore are sometimes devoured by returning grownup crabs of the exact same species, therefore one in every of their names – the cannibal crab.
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