英文關鍵字
activity
animal
aquarium
background
biology
closeup
coil
color
crawl
cute
dark
eat
eye
fish
foot
fresh
freshwater
gastropod
green
horn
lake
living
macro
melania
melanoides
mollusc
mouth
move
moving
nature
organism
physical
plant
pond
pool
radula
raise
river
sand
shell
snail
soil
spiral
spotted
stones
tank
tranquil
tuberculata
wall
water