IN THIS SECTION
Round-the-World Travel Making Baseball Gloves Plants for the Picking Pyramids From Below
ILLUMINATING THE MYSTERIES—AND WONDERS—ALL AROUND US EVERY DAY
NATIONAL GEOGRAPHIC
VOL. 242 NO. 1
GROWING UP, CHELSEA WOOD dreamed of becoming a marine biologist and studying sharks or dolphins—the kind of big, exciting animals that biologists call charismatic megafauna. Instead, during a college internship, she found herself peering through a microscope at the innards of a snail.
As a kid, she had often plucked these periwinkles off rocks along the Long Island shores and collected them in buckets, but she had never looked inside one. So she cracked a snail open, and under magnification she saw “thousands of little, white, sausage-shaped things dumping out of the snail’s body.”
The sausages were larvae of the flatworm…
