Gecarcoidea natalis is one of the big carbs on the land, as is one of most famous lived carbs; also its popular name is Christmas Island red crab. And that name was given because of his living home the Christmas Island.
Gecarcoidea natalis has two equal claws on both sides, on claw has the ability to grow again if it’s broken, and its body is about 4.6 in. size width in whole, it has rounded shell cover inside organs like lungs, nostrils.
The females are smaller than males in general with smaller claws, but it has wider Belly appear at the age of three, you can find it in purple or orange colors, although its main color is the clear red.
Christmas Island red crabs are day lover, although they didn’t like direct sun rays, as it may cause dryness symptoms for them, also they make holes to stay on away from the sun, and these holes can be their haven for a year, also they make a cover for these havens to keep its moisture most of time, also it is used while dry time, also they Defend it from any prying.
These carbs prefer wet weather all the time; they can live in rain forests especially its deep soil where they can make holes easily, and stay on it as much as they want.
They can eat any available food like leaves, fruits, plants, insects, flowers, seeds, and dead animals, even dead carbs.
There are specific month’s ovulation period of the carbs which are November and December, and it can extend to January. So during these periods of time carbs immigrate, and chose the suitable coast to settle, then the males who arrived first to start making holes for marriage, that may take a week from them, then the females reach, and lay on eggs, and stay from 12 to 13 days, but the males leave directly, and return back, while females stay two other weeks with the eggs to guard, and watch.
The females didn’t wait until the eggs hatch, but they throw the eggs in the ocean and leave it, and return back. These larvae stay on the ocean from three to four weeks, than return back to their home as new members of Christmas Island red crab.
The larvae through these 3-4 weeks move in whirlpool water, and keep moving then turn into megalopae, which stay beside the beach about 1-2 days and then become young carbs with 5 mm size; these small carbs make a new journey lasts about nine days.
These mini carbs stay hidden under leaves, sand, or rocks most of time at its three years at first to avoid dangerous animals, the process of growing is slow some kind, as it takes from four to five years to become adults.
Unfortunately a lot of these larvae face serious problems with different dangerous fishes like Sharks and was eaten most of time.
The immigration of the Gecarcoidea natalis can be in the top list of most interesting trips in the world, as at the same time every year these small creatures travel with millions to the extent that gives all surrounding earth red color.
That trip attracts people from all over the world to watch what these crabs do as if they are going to invade the world.
Christmas Island red crabs may be the only creatures in the world that make long trip for marriage, they leave from Christmas Island center to the sea in groups of millions through roads, streets, and even high ways until they reach the sea shore then start they movement towards the ocean.
Through this immigration Gecarcoidea natalis faces some troubles some of it maybe because of humans like accidents, so today there are a lot of solutions to protect these attractive red crabs by making them special tunnels, suitable bridges and helping them in their journey by making roads suitable at the immigration time.