We read in today's paper that researchers have discovered "that baby sea turtles use natural magnetic field patterns as navigational guides to stay within the Atlantic gyre, an ocean-wide current of warm water". Pretty clever of those little critters, wouldn't you say? This magnetic field sensitivity may offer a clue to the unsolved mystery of the navigational genius of the Monarch butterfly. Every year the Monarch travels from the meadows of southern Ontario in Canada to a small mountainous region in Central Mexico, a journey of thousands of miles, which is completed by the offspring of the original migrants. They rest for a time blanketing a mountain forest like snow and then they make the long trip back to Ontario arriving in Spring. How do they do it? No-one knows. So what do we call these unexplained marvels of tiny creatures? I mention only two marvels here but there must be dozens.