Much of the 10-kilometer - ( 6-mile - ) long atoll is covered with forest ( greenish brown ) .
环礁周长10公里(6英里),大部分地方为森林覆盖(墨绿色的)。
As most japanese know , the original was stridently anti-nuclear , partly triggered by the fate of japanese fishermen who unwittingly sailed too close to america 's bikini atoll atomic test .
The turquoise lagoon of french polynesia 's mataiva atoll stands out against the dark blue of the surrounding pacific ocean in an image taken by an astronaut on august 13 .