animal
aquatic
australia
australian
beautiful
bill
billed
brown
creature
creek
daytime
duck
duckbill
duckbilled
elusive
endangered
exotic
feet
fur
mammal
monotreme
nature
ornithorhynchus
platypus
rare
reflections
river
semiaquatic
surface
swim
tasmania
unique
venomous
water
web
wild
wilderness
wildlife