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History
Tubercle
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In anatomy, a tubercle is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal.
This view of the cactus Mammillaria marksiana shows its pattern of prominent tubercles, with the spines emanating from each tubercle's tip.
This view of the cactus Mammillaria marksiana shows its pattern of prominent tubercles, with the spines emanating from each tubercle's tip.
Nudibranch Phyllidia varicosa, clearly showing the yellow tubercles on the dorsum
Nudibranch Phyllidia varicosa, clearly showing the yellow tubercles on the dorsum
Skin impression from the abdomen of the duck-billed dinosaur Edmontosaurus annectens, showing tubercular scales
Skin impression from the abdomen of the duck-billed dinosaur Edmontosaurus annectens, showing tubercular scales
Humpback whale
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The humpback whale is a species of baleen whale. It is a rorqual and is the only species in the genus Megaptera. Adults range in length from 14–17 m (46–56 ft) and weigh up to 40 metric tons. The humpback has a distinctive body shape, with long pectoral fins and tubercles on its head. It is known for breaching and other distinctive surface behaviors, making it popular with whale watchers. Males produce a complex song typically lasting 4 to 33 minutes.
Humpback whale
Humpback whale
Young whale with blowholes visible
Young whale with blowholes visible
Humpbacks frequently breach, throwing two-thirds or more of their bodies out of the water and splashing down on their backs.
Humpbacks frequently breach, throwing two-thirds or more of their bodies out of the water and splashing down on their backs.
Humpback whale lobtailing
Humpback whale lobtailing