It’s World Otter Day! (Patreon)

Happy World Otter Day! They’re not just cute –– they're a vivid example of life on the edge. Unlike whales and other ocean mammals, sea otters have no blubber. Yet they're still able to keep warm in the frigid Pacific waters. The secret to their survival? A fur coat like no other. Learn more about their fantastic fur with our Deep Look episode here.

And did you know that otters help eelgrass sea hares, too? Find out how in our episode, "Sea Slugs Scrub Seagrass by the Seashore".