Christmas Island, an Australian territory, is a small island in the Indian Ocean. Once a year, red crabs — native to the island — begin making their way from the forest to the ocean for mating season.
How to get there
There are direct flights to Christmas Island departing from Perth, Australia. A flight to Perth can easily be booked from many other major cities in Australia or South East Asia.
Once on Christmas Island, the red crab migration takes place all over. Several roads often need to be closed down. The island has even constructed several bridges and tunnels for them to safely make their way to the ocean. You won’t miss seeing them.
What you should consider
The red migration usually happens over a period of a few days between November and December. Their breeding cycle is dependent on the cycles of the moon, as they relate to the tide cycles. You can consult the Christmas Island Tourism Association for more precise date predications, but do keep in mind even these are just predictions.
What it will cost
The flight from Perth to Christmas Island is roughly $400 one way. Once on the island, the average price for a hotel room is $100/night or more. If you are on a budget, consider camping on Dolly Beach, as it is one of the most recommended camp spots. 
(via Matador Network)
