Largest bay by shoreline (including tributaries)

- Who
- Chesapeake Bay
- Where
- Not Applicable
- When
- 01 January 2014
When its tidal tributaries are taken into account, the largest bay in the world measured by shoreline length is Chesapeake Bay, USA, with a shoreline of 18,804 km (11,684 miles). It sits inland from the Atlantic Ocean, surrounded by the states of Maryland and Virginia.