When the Greeks came and settled in Tarpon Springs,Florida, they brought their expertise in sponge diving, and extraordinary cuisine,and a unique manner of celebrating the Epiphany. Often overshadowed by Christmas, Epiphany is one of the most sacred Greek Orthodox celebrations. It honors the baptism of Jesus in the Jordan River.
The Tarpon Springs Epiphany Tradition began in 1903 and has evolved into a day-long affair. The festival begins at the Saint Nicholas Greek Orthodox Cathedral with Orthros, and Archierarchical Liturgy,and the Greater Blessing of Waters, followed by a procession through the town to Spring Bayou for the Blessing of the Bayou and Casting of the Cross.
Once at the bayou, or an archbishop tosses the cross into the water. Teenagers then select their positions on boats around the Bayou and dive into the waters to retrieve the cross. The young man who brings the cross back up to the surface is said to enjoy gracious luck for the following year and also has his name inscribed on the statue outside the cathedral.
Source: atlasobscura.com