Fish form orderly queues in emergencies. When evacuating through narrow spaces in sketchy situations, schools of neon tetra fish queue so that they don’t collide or clog up the line. Scientists interpreted this behaviour as showing that fish can respect social rules even in emergencies, unlike us humans.
100 Mind-Blowing Interpreted Facts
An ancient Roman graffitied into the paving stones at Ephesus what is interpreted as directions to a nearby brothel.