A researcher at the Monterey Aquarium revealed that otters use all types of things in addition to rocks to crack open shellfish. She said steel rods are one of their favorite tools. But she says she has witnessed a female otter using, yes, that's right, a bottle. This particular female, the researcher added, had a pup which learned this behavior and ended up using a bottle as well.
Sea otters are truly remarkable animals to observe.
Let's hope some day they make it off the endangered list. All rights reserved.