If you're a person with eyes and access to the Internet, (which I'll assume you are because... hello?) you're probably aware that sea otters sleep holding hands to not drift away from each other while snoozing. If you didn't know, you're welcome.

But did you also know that at some point in the past century they were hunted to near extinction for their thick fur? By 1911, there were less than 2000 sea otters left. Luckily conservation efforts managed to reverse the decline in population and today, there are approximately 106.000 sea otters around the world.

However, sea otters are still listed as an endangered species on International Union for Conservation of Nature's (IUCN) Red List of Threatened Species and their population seems to be declining.