The River Thames is a working urban river whose significance in the book sharpens when whales appear in its waters. The index records whale encounters there across pages 305–11, linking the river to a history in which the presence of a whale could turn a familiar city waterway into an object of public attention.

An urban river in a maritime history

The book’s index situates the Thames within its account of London of Whaling Trade and Thames Whale Encounters: it lists whales in the city as well as London’s role as a whaling port. The river therefore belongs to two overlapping histories, one of maritime commerce and another of whales entering an urban setting. Its importance is not presented through a detailed description of the river’s course, but through the recurring record of these encounters.

Whale encounters across time

The Thames index entry gathers references to whales over a broad span of the book. Among the named episodes are the 1658 Thames whale stranding and capture and the 2006 Thames whale incident. The evidence here establishes their recurrence and dates, but does not give the circumstances or outcomes of either episode; the river’s documented role is as the setting where such events came into view.

The river and the limits of human mastery

The book’s wider account presents the sea as a persistent wilderness that human beings often mistake for something mastered or merely traversed. Against that perspective, whale encounters in the Thames bring the animal into the midst of an inhabited, working environment. The river becomes a point of contact between human city life and a nonhuman world that cannot be reduced to commerce or scenery. Its recurring place in the record makes that encounter part of the book’s larger meditation on how whales unsettle human assumptions about familiar waters.