![Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian](https://i.guim.co.uk/img/static/sys-images/Observer/Pix/pictures/2013/4/26/1367004441942/Female-western-lowland-go-010.jpg?width=465&quality=85&dpr=1&s=none)
Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian
![Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian](https://i.guim.co.uk/img/media/c4f18f0b0fb50f040c5a16c61e884eb6313a1996/0_165_2478_1487/500.jpg?quality=85&auto=format&fit=max&s=deb604169ae94a6c0eb3bbc3d4fc5afb)
Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian
![a gorilla monkey with his mouth open in surprise looks out of the laptop screen on a neutral background of aqua menthe color Stock Photo | Adobe Stock a gorilla monkey with his mouth open in surprise looks out of the laptop screen on a neutral background of aqua menthe color Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/03/10/15/77/1000_F_310157744_oDbndmKwOlnPUAmv0YtzvTDLaQEQu4UZ.jpg)
a gorilla monkey with his mouth open in surprise looks out of the laptop screen on a neutral background of aqua menthe color Stock Photo | Adobe Stock
![Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian Big brains, no fur, sinuses … are these clues to our ancestors' lives as 'aquatic apes'? | Primatology | The Guardian](https://i.guim.co.uk/img/static/sys-images/Observer/Pix/pictures/2013/4/26/1367004441942/Female-western-lowland-go-010.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdG8tYWdlLTIwMTMucG5n&enable=upscale&s=a30136ac4b8a5efd57937364e7c2a07f)