What is name given to body of with water surrouding it?

The most common name for a point of land extending into a body of water is peninsula. Usually a peninsula has water around three of its sides. The Yucatan Peninsula is an example of a peninsula.

Other Words that may mean the same are cape, headland, point, and spit. A cape is usually a large point of land that goes into the sea. A headland juts into a bay and has high cliffs. A spit is a sandy point of land extending into a body of water from a beach.