Roads turned red this week as millions of red crabs on Christmas Island emerged from the centre of the island for their annual migration journey on the island off the coast of Western Australia. With a population of over 100 million, the crabs are unique to the island — much of which is designated as a national park — and protected by Australian law. The migration, that usually lasts for days, sees the crabs journey from the island off the coast of Western Australia to the ocean, where they mate