National geographic розповідає про хвости горбатих китів

Did you know, the shape, markings and coloration of the tail of humpback whales can be used so that we can recognize them individually?! That means we can recognize where they go, who they spend time with, what they eat, how they behave and who they give birth to. We can make a catalogue of all the whales in an area and their connections....kinda like facebook!
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National Geographic