On Guam's flag, the central seal shows a proa sailing in which bay?

On Guam’s flag, the central seal shows a proa sailing in Hagåtña Bay. The proa is a traditional Chamorro outrigger craft, linking the emblem to Guam’s Indigenous maritime culture.

The almond-shaped seal appears at the center of the flag and includes a coconut palm, shoreline, water, and the word “GUAM.” Its shape recalls the sling stones used by the ancient Chamorro people. The bay is also known as Agaña Bay in older English usage; Hagåtña is the modern Chamorro name of Guam’s capital, so the two names can describe the same coastal setting.

Guam’s flag was designed by Helen L. Paul. The original flag was adopted in 1917, while the narrow red border was added after World War II and the bordered version was approved in 1948. The border commemorates bloodshed during the war and earlier Spanish sovereignty. Tumon Bay and Apra Harbor are separate Guam locations, not the bay shown in the seal.