Predatory octopuses were drilling into clamshells at least 75 million years ago
Tiny holes in ancient clams push the known date of this behavior back millions of years
![Muusoctopus johnsonianus octopus on the seafloor](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/02/022621_CG_octopus_feat.jpg?fit=1030%2C580&ssl=1)
Modern octopuses, such as this Muusoctopus johnsonianus in the Gulf of Mexico, use a sharp ring of teeth on their tongues to drill into the tough shells of clams or mussels.
NOAA Office of Ocean Exploration and Research