The red crab migration in numbers

50 million  The number of red crabs on Christmas Island!

100,000 The eggs a single female can brood

116 Maximum red crab body shell (carapace) size in millimetres

100 Possible density of female crabs per square metre when spawning

31 Underpasses installed

20 Kilometres of barriers

Red crab migration - blue fence

12-13 Days females brood their eggs in a moist burrow

4 Weeks it takes for the eggs to develop into megalops and emerge from the sea


5 Their size in millimetres when the baby crabs begin their journey back to the forests

9 The days it takes the baby crabs to reach the plateau

3 Years it takes the baby crabs to mature

1 Crab bridge!