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Humpback Whales: Giants That Sing and Leap

Size and Physical Features

Humpback whales are among the largest animals on Earth. Adults measure 40 to 60 feet (12 to 18 meters) in length and weigh 25 to 40 metric tons (55,000 to 88,000 pounds). Their most distinctive feature is their pectoral fins, which reach up to one-third of the animal's total body length — roughly 15 feet (4.5 meters) — the longest pectoral fins of any whale species. The scientific name Megaptera novaeangliae translates to "big-winged New Englander," reflecting both the enormous fins and the species' historic abundance in New England waters. Knobby bumps called tubercles line the leading edge of the pectoral fins and the head. Each tubercle contains a single hair follicle believed to detect water movement.

The Humpback's Famous Breach

A full breach involves the whale propelling itself mostly out of the water and rotating before splashing back down. To achieve this, a humpback must accelerate to roughly 17 miles per hour (27 km/h) and redirect that momentum upward. Researchers studying breaching in Baja California, Mexico, recorded individuals breaching over 130 consecutive times in a single session, suggesting it may be a form of long-distance communication rather than pure play. The shockwave from a full breach landing can be heard underwater from several kilometers away, carrying low-frequency pressure pulses that other humpbacks can detect.

Songs That Travel Hundreds of Miles

Male humpback whales produce complex, structured vocal sequences called songs that can last from 10 minutes to several hours and are audible to other whales across hundreds of miles of ocean. The songs consist of phrases grouped into themes repeated in a specific order, and they evolve slowly over each breeding season — males in a population gradually copy each other's changes until a new version replaces the old one. Researcher Roger Payne first brought humpback whale songs to public attention in 1970 with a recording released as an album, sparking worldwide interest in cetacean intelligence and contributing to the Save the Whales movement.

Bubble-Net Feeding

Humpback whales in Alaska and other cold-water feeding grounds use a cooperative hunting technique called bubble-net feeding. A group of whales dives beneath a school of herring or krill, then one or more whales swim in circles while exhaling through their blowholes to create a cylindrical curtain of rising bubbles. The prey fish are reluctant to cross the bubble wall and cluster in a tightening column. Other whales then lunge upward through the center of the column with mouths wide open, engulfing thousands of fish in a single gulp. Each whale can consume up to 3,000 pounds of food per day during the summer feeding season.

Conservation Recovery

Commercial whaling severely reduced humpback whale populations during the 18th, 19th, and early 20th centuries. By 1966, when the International Whaling Commission granted the species international protection, some populations had declined by over 90 percent from pre-whaling estimates. Following decades of protection, humpback numbers have recovered significantly. The global population is now estimated at around 80,000 to 90,000 individuals, and most populations were removed from the US Endangered Species List in 2016, though some specific populations around Oceania and the Arabian Sea remain listed. Their recovery is considered one of the most successful conservation stories in marine biology.