After almost 50 years of pollution control, clean-up and restoration efforts, researchers have catalogued well over 1,000 bottlenose dolphins living, mating, and even giving birth in the lower reaches of the Potomac river.
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After almost 50 years of pollution control, clean-up and restoration efforts, researchers have catalogued well over 1,000 bottlenose dolphins living, mating, and even giving birth in the lower reaches of the Potomac river.
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