Since its lowest point in the 1970s, the Baltic ringed seal population has grown from about 5,000 to 25,000 individuals. Behind this increase are hunting bans and the phasing out of environmentally hazardous substances such as PCB and DDT. The decline in environmental toxins has allowed the reproductive ability of ringed seals to recover to normal levels, typical in a healthy environment.
Revised, more accurate Baltic ringed seal count reveals hunting slows population growth
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