'In the Pirarucu of the Amazon, only the young have working gills; adults breathe this'
air
FISH: In the Pirarucu of the Amazon, only the young have working gills; adults breathe this
In the Pirarucu of the Amazon, only the young have working gills; adults breathe this
In the Pirarucu of the Amazon, only the young have working gills; adults breathe this
FISH
air
FISH