The St. Nicholas Boat Line was established in 1924 by Captain Michael J. Billiris and continues to be operated by the Billiris family. It is the second oldest attraction in the State of Florida. The St.Nicholas VII is a US Coast Guard Certified Vessel. We’re a sponge diving educational tour. The St. Nicholas VII departs about every 40 minutes for a round trip cruise through the Historic Sponge Docks of Tarpon Springs on the Anclote River.