beaver
otter
dragonfly
ocean / sea
lake
river
fertilizers / pesticides
oil pollution
trash
ocean / sea
lake
river
lake
ocean / sea
river
frog
otter
dragonfly
agriculture
industry
energy
energy
agriculture
industry
fertilizers / pesticides
oil pollution
trash
alligator
beaver
otter
energy
agriculture
industry
otter
river dolphin
dragonfly
otter
alligator
river dolphin
oil pollution
trash
fertilizers / pesticides