but they are home to some of the most precious wildlife on Earth. 但它们仍是地球上某些珍贵动物的家园
But, when new challenges arrive, they can struggle to cope. 但当新挑战来袭 它们只能尽力去应对
They escape from visiting ships, and with no predators 它们搭乘来访的船只来到岛上 由于缺乏天敌控制
to control them, they have now created vast 它们在森林里建立了
Once a year, they must all return to the sea to breed, 每年它们都会回到海洋中进行繁殖
Given there are so many of them, they get along relatively harmoniously. 鉴于它们的数量众多 彼此之间还算相对和谐
But the greatest threat they face is change. 但它们眼前的最大威胁已经改变
and the danger they brought will be gone. 它们带来的危险也将不复存在
they carry these hitchhiking seeds away to other islands. 会带着这些搭顺风车的种子前往其它岛屿
They do make nests, and Pisonia trees 它们老实筑窝 腺果藤树能让