Canada's northeastern coast isn't known for ecological despoilation, but "Sea of Slaughter" shows it does have it's own unfortunate history.
If you want some reading material that will keep you both fascinated and horrified, watch for Farley Mowat's latest, Sea of Slaughter, published by the Atlantic Monthly Press in April.
Sea of Slaughter is Mowat's account of the systematic extermination of dozens of species of birds, mammals, and fish on the northeastern coast of North America. Penguins, bears, whales — just about anything that moved was slaughtered. Indeed, the butchering of baby seals off Newfoundland that so shocks and appalls us today is remarkable mainly because there are seals left to kill.
Mowat's chilling book is not exactly enjoyable, but it is important.