Agence France-Presse: The rare Saimaa ringed seal, which lives only in Finland and whose population is estimated at just 260, is increasingly threatened by fishermen’s nets and the melting of its icy habitat due to climate change, experts say. The seal lives only in Finland’s biggest lake, Lake Saimaa, in the eastern part of the country. It is a subspecies of the ringed seal that became a fresh water mammal some 9,500 years ago when ice melted after the ice age and it became trapped in the lake. It …