The Serrana Bank is a mostly underwater reef about 50km long and 13 km wide upon which lie cays and islets, the most prominent of which is Southwest Cay. Serrana Bank is Colombian territory, though it was claimed and occupied by the United States until 1981. A former base for the US military, they are now mostly visited by lobster fishermen. 1981 is a common year starting on Thursday of the Gregorian calendar. ... Subfamilies and Genera Neophoberinae Acanthacaris Thymopinae Nephropsis Nephropides Thymops Thymopsis Nephropinae Homarus Nephrops Homarinus Metanephrops Eunephrops Thymopides Clawed lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans. ...
Serrana Bank is believed to be named after the Spanish castaway Pedro Serrano. It was first shown on a Dutch map in 1545 with this name. They were mapped more extensively by the British in 1660. On September 8, 1972, the United States and Colombia signed a treaty recognizing the latter's sovereignty over Quita Sueño Bank, Roncador Cay and Serrana Bank. This treaty became effective September 17, 1981. Spanish sailor supposed to have been marooned for seven or eight years in the sixteenth century on a small island. ... Events February 27 - Battle of Ancrum Moor - Scots victory over superior English forces December 13 - Official opening of the Council of Trent (closed 1563) Battle of Kawagoe - between two branches of Uesugi families and the late Hojo clan in Japan. ... Events Expulsion of the Carib indigenous people from Martinique by French occupying forces. ... September 17 is the 260th day of the year (261st in leap years). ... 1981 is a common year starting on Thursday of the Gregorian calendar. ...
The Serranilla Bank Lighthouse, inhabited today, and which has been in operation since 1977, stands on a corall ledge in the southwest approach to the bank, at 15°48'N, 79°51'W. The lighthouse is 20 m (65 ft) high.
The bank has no islands, but in the northeastern part is a 37 km long reef which partly dries at low time.
The Roncador Bank, a mostly submerged atoll with several sandy cays, is 14 by 6 km in size, with an area of 65 km² (mostly water – lagoon).