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John Tangney | all galleries >> All Alaska Trips >> Katmai NP Bears and Sitka Whales, Sep 2018 >> Sitka, Alaska and Whales, Sep 2018 >> Fourth Day Whale Cruise at Sitka > JT5_1350p.jpg
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22-Sep-2018 John Tangney

JT5_1350p.jpg

Sitka, Alaska, USA

Humpback Whale on the surface. The bumps on the head are "tubercles" which protect nerve cells and hair follicles at the center. Scientists still do not know what these hairs and nerve cells are used for.


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