Sea otters may be strong swimmers, but that doesn't mean they don't want to take a break every now and then. This otter in Monterey Bay, California, decided it was tired of paddling when it saw a woman kayaking towards it and decided to hop on. We're not sure just how long the otter ended up ...

If you can see the sun, you're unlikely to ever see a ghost shark. That's because ghost sharks, or chimaeras, are found so deep underwater that the sun's rays can't penetrate. This particular ghost shark, which is a pointy-nosed blue chimaera, was filmed in 2009 in the North Pacific for the ...