Sea otters are surprisingly good at using tools. If they come across a particularly tough clam shell and they are desperate to reach the meat inside, they have a plan. They deploy their trusty rock to ...

CNN — When sea otters hammer mussel shells against rocks to help open them, they're leaving behind their own archaeological record that can't be compared to any other creature, according to a new ...

Add Yahoo as a preferred source to see more of our stories on Google. Image via Shutterstock/Neil Aronson (Image via Shutterstock/Neil Aronson) Did you know that sea otters have favorite rocks ...

So, to capture this incredible behaviour, filmmakers and scientists teamed up to create a robotic ‘Spy Sea Otter’ camera for ...