"In 2013, the median price of a single-family home on Nantucket was just over a million dollars. That's way more than the state median of 322,000." So how do non-gazillionaires and other mere mortals afford to live on the island? Here's a profile of two couples who have found some rather creative ways, one tiny and the other aquatic, to deal with the dearth of affordable housing on The Grey Lady. [WCAI]