英文關鍵字
boat
cargo
chuuk
coral
corrosion
deep
diver
diving
encrusted
gosei
hailstone
historic
imperial
indo
islands
japanese
lagoon
marine
maru
micronesia
nature
navy
ocean
operation
pacific
reef
rust
scuba
sea
seabed
ship
shipwreck
state
sunk
sunken
the
tragedy
transport
travel
truk
undersea
underwater
vessel
war
water
world
wreck
wreckage