圣诞岛红蟹

据圣诞岛国家公园网站介绍，作为圣诞岛上的14种蟹类之一，圣诞岛红蟹是最为常见的。

Of Christmas Island's14 crab species , the Christmas Island red crab ( above , crabs migrating in an undated picture ) is the most easily spotted , according to the Christmas Island National Park website .

圣诞岛红蟹的甲壳和圆形的肩甲包裹着它们的肺和鳃。

The Christmas Island red crabs'carapace is round shouldered and encloses their lungs and gills .

圣诞岛红蟹在生长的初期阶段定期脱壳来使之符合自己的身体大小。

The Christmas Island red crabs moult their shells regularly during their early growth phases to match their increasing body size .

圣诞岛红蟹一旦到达海边的交配地点时，雄性就会挖洞以抵御掠食者。

Once Christmas Island crabs arrive at their beachside mating spots , males dig burrows and defend them from marauders , study co-author Turner said ( file photo ) .