Origin

The character 浜 combines water (shown by the three-dot water radical on the left) with the character 兵, which serves as a sound hint for the pronunciation. The water radical makes sense for a character meaning seacoast or beach, since these are places where water meets land. The 兵 component doesn't contribute to the meaning but historically indicated how the character should be pronounced. Together, the water radical carries the semantic content while 兵 guides you toward the sound "hin" or "hama."