Humpbacks inhabit all the oceans of the world though at the end of autumn they leave their cold, rich feeding ground for warm tropical waters, fasting until they return to the cold again in early spring. It was soon discovered that Rurutu was a place for pregnant females to give birth, feed their young and let them gain enough weight and strength for the long journey home around October/November. Its shallow waters are free of deep-sea predators, and in case of a storm there are calm lagoons on both sides.

These magnificent creatures grow to an average of 16m in length and weigh approximately 40 tonnes.

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