英文關鍵字
abstract
aground
aqua
background
beach
beam
bottom
calm
definition
floor
high
light
motion
natural
nature
nobody
ocean
pattern
ray
reflection
refraction
ripple
ripples
rippling
river
sand
sandy
scuba
sea
seabed
shallow
submerged
summer
sun
sunbeam
sunk
sunken
sunlight
surface
tropical
tropics
under
undersea
underwater
water
wave
waves
wavy
wracked