The humpback whale is a species of baleen whale. Humans once hunted the to the brink of extinction

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It is a rorqual and is the only species in the genus Megaptera. Adults range in length from 14–17 m and weigh up to 40 metric tons. The humpback has a distinctive body shape, with long pectoral fins and tubercles on its head.
Mass: 55,000 – 66,000 lbs
Lifespan: 45 – 50 years
Conservation status: Least Concern (Population increasing) Encyclopedia of Life
Gestation period: 11 months Encyclopedia of Life
Trophic level: Carnivorous Encyclopedia of Life
Length: 49 – 52 ft. (Female, Adult), 43 – 46 ft. (Male, Adult)
Scientific name: Megaptera novaeangliae
Humans once hunted the species to the brink of extinction; its population fell to around 5,000 by the 1960s. Numbers have partially recovered to some 135,000 animals worldwide, while entanglement in fishing gear, collisions with ships, and noise pollution continue to affect the species.
Orcas. Transient killer whales prey on marine mammals, and are one of the humpback whale's main predators. They attack calves and younger animals more frequently, and most humpback whales have scars as a result of prior orca attacks, including drag marks on their tails.