EVEN IN THE WORST OF LIGHT Leaving the narrow streets of Parguera, we're anxious to see the mercury shine of micro-organisms in the stirred waters. Still I'm stunned by the glow as two girls dive into the shadow, turn splash to spark in the blackness. We knew to visit the phosphorescent bay on a moonless night and though tonight's light is the worst for viewing, this is our only evening on the Caribbean side. When our guide fills a bucket with bay water and tells us to form a circle to block the moon's glow I'm aware that we'll board the plane in the morning, our son will leave for school, our daughter will plunge back to her life and friends. As we lean over the gallon together, I watch our fingers ripple stars that glint as we stand close as ever scooping the silver light of our last night.