2014 : Best Humpback Whale Photos - maui-mike
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A rambunctious Humpback whale calf performs a slashing sideways tail slap known as a peduncle throw. Mature adult whales use this behavior to signal extreme aggression or agitation.
9 March 2014

Humpback whalesMegaptera novaeangliaecetaceansMauis whaleswhaleswhale watchingMaalaea Baybaleen whalesBalaenopteridaeHawaiian Islands Humpback Whale National Marine Sanctuarywhale behavior