Tag Archives: natural history

Ice Age survivors: a tale of two land-locked fish

Maine lakes are home to two evolutionary wonders of the animal kingdom, Arctic char and landlocked salmon, related species of fish that exist in very few places. They descend from a common ancestor that lived millions of years ago. Evolution took them on diverging pathways during repeated ice ages. The char stayed farther north, swimming […]

Maine’s Wild Oysters

Scientists are studying isolated oyster grounds in Maine’s Sheepscot River that may date back to the last ice age. Meanwhile, as the aquaculture industry has grown and coastal water temperatures have warmed, cultured oysters have begun to multiply on their own elsewhere, particularly in the brackish waters of the Damariscotta River. Both kinds of “wild” […]