Whales of the Silver Bank - Blow Holes & Blows

spinning head breach The blowholes are equipped with nasal plugs, which remain closed until forced open by respiratory pressure. Humpback whales are voluntary breathers (as opposed to most land-based mammals, who tend to be involuntary breathers). During inhalation, a humpback will fill its lungs to capacity; with each exhalation they will expel 90% of the air in the lungs, forcing the air from the blowholes at over three hundred miles per hour. It is believed that adult humpback whales can hold their breath up to 40 minutes.


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