migration

Whale of a time!

Reader Photos

The humpback whale migration passing Sydney takes place between April and December, with two distinct seasons depending on the direction of travel of the majority of whales.

Gallery: Christmas Island red crab migration

Wildlife

Each year, up to about 120 million red crabs (Gecarcoidea natalis) scuttle to the sea from the forest across Christmas Island in an effort to mate. It is a commute which overwhelms the island – the 135sq.km Australian-owned island, located in the Indian Ocean 2600km northwest of Perth, has just over 2000 human inhabitants.