SCIENCEJun 16 · 15:31 UTCCROSSCUT SEATTLECascade PBS Staff

1802 The Seals of Sable Island | Changing Seas | Preview

Each winter, Sable Island becomes the world's largest gray seal breeding colony. The Canadian government has monitored this population since the 1960s, and U.S. experts are now studying how iron transfer during lactation affects pup survival.

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Sable Islandplacegray sealtopicCanadian governmentorganizationU.S. expertsorganizationlactationtopicirontopic

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