þvagganga
þvagganga is an Old Norse term that translates to "treading water" or "wading." It describes the act of moving through water by repeatedly lifting and lowering the feet, as if walking in place. This method of propulsion is distinct from swimming, where the entire body is typically used for movement. Historically, þvagganga would have been a common way for people to navigate shallow bodies of water, fords, or to move around in submerged environments. It implies a controlled and deliberate movement, rather than the more dynamic strokes of swimming. The term appears in Old Norse literature, offering a glimpse into the practicalities of life in ancient Scandinavia and the ways in which people interacted with their aquatic surroundings. It emphasizes a fundamental human ability to move within water, utilizing a simple yet effective technique. The concept is often associated with practical tasks such as crossing rivers, retrieving objects from shallow depths, or simply maintaining position in a watery environment without expending the energy required for full swimming.