Every year, something extraordinary happens on Christmas Island. Millions of bright red crabs leave the forests together and begin a long march toward the ocean, crossing roads, streams, rocks and beaches along the way. The journey is essential. The crabs are heading to the coast to mate and release their eggs, following a remarkable timetable controlled by rainfall, the moon and the tides. But there is a problem in their path-roads.
With tens of millions of crabs moving across the island at once, traffic can become a serious obstacle. So Christmas Island rangers have built an unusual solution above one of the island’s busiest roads, while also creating dozens of underpasses to help the migrating animals continue toward the coast.
The five-metre-high “crab bridge” has become more than a crossing. It has also become a tourist attraction, offering a remarkable view of one of the world’s great wildlife migrations. The report is taken from Christmas Island National Park, The AP, The BBC and ABC News.