MARCH OF THE RED CRABS, GECARCOIDEA NATALIS. MILLIONS HEADING FOR THE SEA TO SPAWN. CHRISTMAS ISLAND. [Getty Images]

MARCH OF THE RED CRABS, GECARCOIDEA NATALIS. MILLIONS HEADING FOR THE SEA TO SPAWN. CHRISTMAS ISLAND. — see more

MARCH OF THE RED CRABS, GECARCOIDEA NATALIS. MILLIONS HEADING FOR THE SEA TO SPAWN. CHRISTMAS ISLAND.

Photolibrary Fred Bruemmer