The humpback whale (Megaptera novaeangliae) is a baleen whale found in every ocean on Earth, typically migrating between high-latitude feeding grounds in summer and tropical or subtropical breeding grounds in winter. Adults range from roughly 12 to 16 meters in length and are immediately recognizable by their unusually long pectoral fins, which can reach up to a third of their body length, and the distinctive knobbed protuberances called tubercles on their heads and flippers.
Humpback whales are filter feeders that consume krill, small schooling fish, and other zooplankton, using cooperative techniques such as bubble-net feeding to concentrate prey before lunging through it. Their feces, rich in iron and nitrogen, fertilize surface waters and support phytoplankton growth, making them active contributors to ocean nutrient cycling. The species was hunted to severely depleted numbers during the 20th century, and while populations have recovered substantially since the 1986 International Whaling Commission moratorium, ongoing threats include entanglement in fishing gear, ship strikes, underwater noise pollution that interferes with their complex acoustic communication, and the long-term effects of climate change on prey availability.
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