NEWBURY - In his 26 years on Plum Island, Erich Griebling had never seen a stamp in the basin.
Until this week, that is.
A glimpse out Griebling's waterfront window Wednesday morning revealed a great lump on the ice, in a small inlet alongside his neighbors' boats.
"I dug out my binoculars and, sure enough, it was a seal," Griebling, of Melody Lane, said.
