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At birth, Humpback whale calves are between 13 and 15 feet in length. They feed from their mothers rich milk for approximately one year and can grow up to 1.5 feet per month.

Humpback calves are born the length of mother's head, so the calves length and weight can vary greatly. Females run larger than males, with the largest being OVER 60 feet in length and she is part of the North Pacific stock. Her calves are around 20 feet at birth weighing in at 2 tons. Calves are seen 10' to 20 feet and weighing 1 to 2 tons. They gain about 100 lbs daily and grow 1 foot per month, according to Dr. Jim Darling of Whale Trust.

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11y ago
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14y ago

When a humpback whale is born it is 12-14 feet in length and weighs 1 to 1 and a half tons.

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14y ago

Newborn humpbacks are 4.6 m in length and weigh about 1.3 metric tons.

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13y ago

Baby humpback whales (normally 1 or 2 are born at a time) are 10 to 15 feet long (3 to 4.5 meters) and weigh approximately two tons ( approx. 1750 kilos ).

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12y ago

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Q: How long is a baby humpback whale?
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