Sea otters are large marine mammals that spend their days foraging in kelp forests. They dive to the bottom to grab tasty morsels, plus sometimes rocks that they plan to use as tools.

Don’t let their cute appearance fool you - sea otters are skilled and relentless hunters, especially when it comes to octopus ...

Sea otters use rocks and other hard objects to crack open shells to get at the meat inside. And certain dolphins use marine sponges to protect their snouts and stir up the seabed while foraging.

Center for Whale Research, NMFS NOAA Permit 27038 Other marine mammals also use tools. Dolphins, for example, can use coral or sea sponges as tools to groom or eat.

Sea otters have up to 1,000,000 hairs per square inch, giving them the thickest fur of any animal on the planet. The human head only has about 2,000 hairs per square inch.

Sea otters are back, and their return is a breath of fresh air for the waters of Monterey Bay. Marine ecologists Brent Hughes and Kat Beheshti reveal how re-planting seagrass, along with help from ...

Sea otter diagnosed with asthma after being exposed to wildfire smoke. — -- A Seattle sea otter is learning to use a life-saving new toy: An inhaler. Dubbed "Mishka," the sea otter was ...

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against each other’s bodies, a study shows.