TWS Wildlife News

Narwhals increasingly exposed to mercury

Narwhal tusks can tell researchers a lot about the marine mammals’ feeding habits and exposure to dangerous chemicals. “They’re kind of like tree rings,” said Jean-Pierre Desforges, a postdoctoral research fellow at McGill University. “As

Conservation News

Polluted sea lions poison condors

Marine mammals are so polluted that they are poisoning endangered condors, according to a new study. California condors (Gymnogyps californianus) that fed on marine mammal carcasses had high blood levels of several toxic chemicals, including