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.
Betsy is an English name for females, used as a nickname for Elizabeth. It is also a surname. Notable people with the name include: Given name: Betsy Ancker-Johnson (born 1927), American plasma physicist. Betsy Atkins (born 1953), American business executive and entrepreneur.