英文關鍵字
tropical
aquarium
fish
underwater
natural
water
nature
life
swimming
sea
free
freedom
plant
ocean
animals
plants
environment
eco
marine
ecology
coral
reef
ecosystem
background
travel
nobody
living
holiday
vacation
break
enjoying
backgrounds
earth
positive
exotic
scenery
wildlife
environmental
biology
dive
species
seaweed
undersea
seabed
kelp
habitat
seawater
zoology
saltwater
no