Baleen whales

Baleen whales are a major branch of the whale family whose history, physical traits, and human uses connect evolutionary change with commercial exploitation and conservation. In the book, they appear both as animals shaped by a long, uncertain prehistory and as beings whose bodies became resources, specimens, and measures of the consequences of hunting.

Evolution and Classification

The earliest whale-like creatures date to about fifty million years ago, in the Eocene and the ancient Tethys Sea. Their ancestors included the four-legged Pakicetus and the more aquatic Ambulocetus; later forms descended from land-dwelling mammals that entered the water. Around thirty-five million years ago, whales divided into Mysticetes and Odontocetes, while the earlier Archaeocetes became extinct. The division places baleen whales within one of the two principal branches of living whales.

That history is not fully settled. Some scientists believe that the Sperm whale may be genetically closer to baleen whales than to other toothed whales. Fossil discoveries have also complicated familiar expectations: ancestors of baleen whales could have had huge eyes and jagged teeth, unlike the comparatively gentle appearance associated with their modern descendants. Because the fossil record is incomplete, the book presents whale evolution as a history whose broad outlines are visible but whose details remain obscure.

Anatomy and Human Uses

Baleen is both a biological feature and a material in the history of whaling. The Right whale was especially prized: its abundant blubber yielded Whale oil, while its long Baleen could be heated and shaped into umbrella ribs, corset stays, venetian blinds, and brush bristles. The book compares whale bone to plastic in its versatility, showing how an animal’s anatomy was converted into a range of everyday goods. Whaling thus depended not only on the value of oil but also on the useful properties of parts of the whale’s body.

The Right whale’s physical traits also made it particularly vulnerable to hunters. Its fat-rich body was buoyant, so it floated after being killed, and the animals commonly stayed near shore. These features, which might otherwise seem incidental, made the species easier to locate and recover. The book traces the irony between that history of exploitation and the animal’s present-day vulnerability: traits that once made the Right whale a convenient target continue to bring it into contact with human activity.

Population Decline and Conservation

The North Atlantic population of the Right whale has fallen to fewer than four hundred animals, and only eight matrilineal lines remain in the northern species. The book links this narrow genetic inheritance to centuries of whaling. Although the Right whale became the first cetacean protected from hunting in 1935, its North Atlantic numbers have remained static. Protection rules include moving shipping lanes farther north and instructing vessels to remain five hundred yards from whales, yet the species still faces serious risks along busy coastal routes.

The account identifies ship strikes and fishing-gear entanglement as continuing dangers. More than sixty per cent of Right whales have been caught in fishing line, and collisions kill whales including females of calf-bearing age. Because so few breeding animals remain, the survival of a single fertile female may matter to the species’ future. The book also places the crisis in a wider context: during the period in which it was written, the Yangtze River dolphin was declared extinct, and it warns that other species, including Right whales in Cape Cod Bay, could follow. These are presented as urgent risks, not as a certainty that every threatened species will disappear.

Whales in Museums and Public Memory

Museums preserve whale bodies as scientific specimens and make them visible to the public. At the New Bedford Whaling Museum, a Blue whale skeleton weighing fifty tons and measuring sixty-six feet hangs above the reception area. The six-year-old animal had washed ashore on Rhode Island in 1998. After both the museum and the Smithsonian Institution claimed the specimen, they reached an agreement: the museum could keep it if it remained on public view by day and night.

Preparing the skeleton required the animal to be taken apart, its sections lowered into the river in cages, and its flesh removed over two years. The reassembled skeleton now occupies an atrium built to meet the public-display condition. The episode makes the whale’s passage from living animal to museum exhibit concrete: a young Blue whale becomes at once a scientific specimen, a contested object, and a public presence.

At the Natural History Museum, London, collections include preserved cetacean specimens, among them a Humpback whale fetus held in a small container. Such displays place individual whales within systems of classification and conservation, while the larger history of hunting shows how often the animal was treated as material for human use. Across these different settings, baleen whales remain more than a branch on an evolutionary chart: their bodies bear the evidence of deep time, industrial demand, and the difficult work of keeping species alive.