英文關鍵字
america
american
animal
aquatic
big
caribbean
cow
crystal
eat
eating
endangered
fish
florida
food
herbivorous
homosassa
mammal
manatee
manatus
marine
national
nature
refuge
river
sea
species
states
swim
swimming
threatened
tourism
touristic
travel
trichechidae
trichechus
tropical
underwater
united
vegetables
water
wild
wildlife