The mysterious 'dead water' that still poses a risk to swimmers

Science · Published 9 October 2026 Swipe more like this →

In short: For millennia, sailors feared a sea that refused to move. While we now understand the physics behind this phenomenon, it remains a real hazard for modern swimmers and boaters alike.

Known as 'dead water,' this phenomenon involves a sea surface that appears to resist motion, making it difficult for vessels to move forward. Although the scientific community has identified the underlying mechanics, the effect persists in certain conditions.

The video explores the history of these maritime mysteries and examines how understanding these physical properties can improve safety for people in the water today.

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