Seals Depend on Ice from Tidewater Glaciers (U.S. National Park Service)
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Analyzing Icebergs from Tidewater Glaciers (U.S. National Park Service)
Harbor seal (Phoca vitulina richardii) decline continues in the rapidly changing landscape of Glacier Bay National Park, Alaska 1992–2008 - Womble - 2010 - Marine Mammal Science - Wiley Online Library
Glacial Ice and Harbor Seal Study - Glacier Bay National Park & Preserve (U.S. National Park Service)
PDF) Harbor seal (Phoca vitulina richardii) decline continues in the rapidly changing landscape of Glacier Bay National Park, Alaska 1992–2008
Tidewater Glaciers - Alaska Nature and Science (U.S. National Park Service)
Science of Glaciers National Snow and Ice Data Center
Tidewater Glaciers - Oceans, Coasts & Seashores (U.S. National Park Service)
Harbor Seal: Most Up-to-Date Encyclopedia, News & Reviews
Glacier Bay National Park Travel Guide
