Dozens of the dark, oval shapes floated on the swell, much closer to shore than before. Some bobbed gently. Others lolled at odd angles. A few had visible seams or slits—like mouths, or cracks waiting to open. A low, almost subsonic hum filled the air.
Gasps became shouts. Shouts turned to panic. Families grabbed their children. Dogs barked and pulled at leashes. Coolers were left behind as people sprinted. The calm afternoon unraveled into chaos.