英文關鍵字
animal
barrier
boulders
brachyuran
breakwater
bulwark
call
chelae
crab
crabs
crabwise
creature
crustacean
decapod
ebb
ebbing
evening
fighting
gastropod
limpets
marine
mating
mediterranean
mollusk
omnivores
pincers
rock
rocks
sea
seafood
shells
shore
snails
specie
speed
stone
tidal
water
zoological
zoology