A point or peninsula.
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.
According to Merriam-Webster, a piece of land protruding from a larger land area into a body of water could be called a peninsula or a cape.
A pennisula
Well actually an Island has no particular size. And we humans don't create the Islands so we wouldn't know how big they could be or couldn't be. An Island is a body of land (no matter the size) that is surrounded by a body of water. No particular size, but has to be surrounded by water
A lagoon forms when a body of water is enclosed behind a barrier reef. It can also form together with the formation of an atoll, it being the body of water in the middle of the atoll. A lagoon is a body of comparatively shallow salt or brackish water separated from the deeper sea.
A peninsula.
an isthmus
ISTHMUS
name given to point of land extending into a body of water
A point extending into a body of water is called a cape. The cape sticks out into the water beyond the adjacent coast.
An area of water extending into the land from a larger body of water is called a bay. Typically bays are found off of oceans and lakes.
inlet
Bay, coves and gulfs are areas of water extending into land from a larger body of water. Gulfs are largest, bays next and coves smallest.
penisula
Peninsula.
a peninsula!
A piece of land that extends a long way into a body of water is called a 'penninsula'. If it extends only a short way it is called a 'headland' or 'promontory' or 'foreland' The tip of a continent is called a 'cape'.