Counter-illumination differs from countershading, which uses only pigments such as melanin to reduce the appearance of shadows. It is one of the dominant types of aquatic camouflage, along with transparency and silvering. All three methods make animals in open water resemble their environment.
Harper is a Scottish family name that has also commonly used as a given name. The name is believed to have originated in the Dalriadan region of Scotland, especially in the Lennox district, and is associated with Clan Buchanan.
Harpers Ferry (originally Harper's Ferry) is a small town at the confluence of the Potomac River and the Shenandoah River, the site of a historic Federal arsenal (founded by President George Washington in 1799) and a bridge for the critical Baltimore and Ohio Railroad across the Potomac.