Tens of millions of red crabs have begun their annual migration on Christmas Island, near Australia. The crabs move from one end of the island to the other at the same time. Why do they do this? Well, the crabs are travelling to the ocean to mate and lay their eggs. Once they've mated, the female crabs stay in little burrows on the beach for a few weeks whilst their eggs grow. When does their migration start each year? The red crabs annual migration starts with the first rainfall of the wet season. On Christmas Island this is usually between October and November. (Video: Chris Bray) Reposted from @indiatoday #RedCrabs #Migration #AnimalVideo #Australia #ChristmasIsland #ViralVideo https://www.instagram.com/p/CWcWRLpBZqd/?utm_medium=tumblr
