英文關鍵字
bali
offers
rare
opportunity
observe
enchanting
bubble
underwater
polyps
adding
allure
its
world
habitat
serene
creatures
algae
ecosystem
life
tranquil
conservation
photosynthesis
coral
diving
oxygen
flora
fragile
protection
environmental
transparent
sea
scuba
snorkeling
reef
bleaching
growth
water
sustainable
submerged
warming
research
aquatic
ocean
biology
formation
biodiversity
nature
undersea
fascinating
beauty