Boise walkin shop on Instagram: "The Shellback tattoo traces back to U.S. Navy tradition in the early 1900s, tied to the Line-Crossing Ceremony — an initiation ritual for sailors crossing the Equator for the first time. According to Navy folklore, King Neptune, god of the sea, “appears” to grant sailors the title of Shellback (or “Son of Neptune”) after they endure playful hazing rituals. If you have more info please add in comments🙏🏻 Those who passed received Shellback certificates — formal p