Australian red crabs migrate because they are influenced by their environment and their own breeding patterns. Australian red crabs, also known as Christmas Island red crabs, only inhabit the area during the rainy season. And when the dry season comes, they must move to the tropical jungle. When the rainy season comes again, they need to go to Christmas Island for breeding. Because this crab has few natural enemies and carries a certain amount of toxin in its body, it is growing in numbers, and the Australian government is said to have built a migratory highway just for them.

Every year in November, is the Christmas Island ushered in the rainy season, this time living in the tropical jungle of the red crabs, need to migrate to the beach to reproduce. Because the jungle is so far from the edge of the island, it often takes a few days for the red crabs to complete this operation. Thousands of red crabs, passing by people's highways and buildings throughout the process, are enough to color the entire ground red. Back in 2005, local crab bridges and barriers were built for the red crabs to help them migrate. Despite this, hundreds of thousands of red crabs are still accidentally trampled to death by people on the roads every year as their numbers grow.

Seeing the crabs migrate, there may be a lot of people who wonder if it wouldn't be better to live directly on the edge of the island. Christmas Island is divided into rainy and dry seasons, the shell of the red crab has no sun protection, in the dry season must migrate to the jungle, digging burrows next to the roots of trees to survive. Considering the reproduction of the race, they must again return to the island during the rainy season. Christmas Island has both a wet and a dry season every year, and Australia's red crabs have to migrate every year.

When netizens see a race flooding, they think of eating their way out of it, but let's be careful about one thing: not all creatures can be used as food on the table. Red crabs have a substance in their bodies that must be treated rigorously to be safe, and the number that make it to the dinner table is very small. Combined with the fact that there are few natural predators in the area, these crabs are growing in numbers. It is the female crabs that really restrain the numbers, feeling tired while reproducing and ? eat and give birth at the same time?