They're the villain cousins of invasive plants... The spiny water flea, the Emerald Ash Borer, the Rusty crayfish and Rocksnot. Each either in New Hampshire or threatening to do so and harming not only the water, plants and land but indigenous animals, plus they have not natural predators. We'll look more closely at these invasive fish, insects and mollusks and what's being done to combat them.
The New Hampshire Department of Environmental Services has found two more lakes in New Hampshire that have been infested with milfoil, an invasive aquatic plant. DES announced that Otter Pond in Greenfield and Naticook Lake in Merrimack both have well-established milfoil infestations.