Any animal that lives in a cave has to cope with complete blackness, 住在洞穴里的动物都必须 适应彻底黑暗的环境
but in New Zealand some have turned this darkness to their advantage. 但是在新西兰 有些动物却能利用黑暗的条件
This is the biggest cave shaft in the world. 这是世界上最大的深洞
will certainly be useful later in life in these flooded mangrove forests. 将来会成为在红树林中 非常有用的生活技能
In cooler climes, mud, laid down in estuaries, 在较冷的地区 沉积在入海口的泥沙
In Indonesia these monkeys have adopted a unique amphibious lifestyle - 在印度尼西亚 这些猴子 过着一种独特的双栖式生活
At the delta's mouth - the largest mangrove forest in the world, 三角洲河口地带有一片 世界上最大的红树林
These extraordinary forests spring up throughout the tropics in these tidal zones where rivers meet the sea. 这些特殊的树林遍及整个热带地区的潮间带 那里正是河流的入海口
In Bangladesh the Ganges and Brahmaputra rivers join 在孟加拉国 恒河与雅鲁藏布江的交汇处