What is polka culebra?

Culebra is a small island-municipality of Puerto Rico (U.S.) located approximately 17 miles (27 km) east of the Puerto Rican mainland, 12 miles (19 km) west of St. Thomas and Vieques, and 9 miles (14 km) north of St. Croix. Culebra is spread over 5 wards and Culebrita, and has a land area of approximately 11 square miles (28 km2).Culebra is part of an archipelago that includes the islands of Culebrita and Luis Peña. The deepwater Culebra Passage lies between Culebra and Culebrita. Although part of an archipelago located between Vieques and the U.S. Virgin Islands, the smaller islets, such as Cayo Norte, Cayo Lobito, Cayo Muertos, and Arrecife Culebrita to name a few, are all part of Culebra and not Vieques or the U.S. Virgin Islands.