Christmas Island's red crabs scuttle from rainforest to coast in their millions as annual migration begins

This year's Christmas Island red crab migration is expected to see 65 million of the critters trek from tropical rainforests to the sandy coast, according to Parks Australia. Key points: Red crabs have begun their annual migration on Christmas Island Parks Australia says this could be one of the biggest seasons in recent years The crabs trek up to 20 kilometres from the rainforests to the coast The island's native species manager Derek Ball said this year's migration could be the biggest in years. Wildlife photographer and Swell Lodge owner Chris Bray said when the island woke, it was "red with crabs". Mr Bray said witnessing the migration was "spectacular" and a major force behind the island's tourism, but the novelty did wear off after a few weeks.