Sea otters hold hands while they sleep floating on their backs, an incredibly precious behavior known as rafting, so they don’t get separated while they’re napping. The behavior is particularly useful to young sea otters, who haven’t quite developed their sea legs yet and need to stay close to mom. That’s smart. You know, sometimes my girlfriend and I hold hands when we sleep, but I still wake up alone. When do you think she’s coming back? “She left months ago.” So it’s gotta be soon, right?