What would you like to do?

What is is the difference between an island and an atoll?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

An atoll is formed from an island, but it isn't entirely an island. It's a coral reef that makes the different. The reef grows in a ring around the island and the island erodes, until little if any of it is above the surface of the water and the coral reef remains.

Islands are any small body of land surrounded by water. Islands in the middle of the ocean are usually volcanic and islands in lakes and near continents are usually just areas of the continental shelf surrounding the continent with a higher elevation.

To actually answer your question, the KEY difference is the reef.
+ 7 others found this useful
Thanks for the feedback!

What is the difference between an atoll and a high island?

There are a great variety of differences between atolls and high islands, these include how they were formed, the soil quality, population and what they look like. An atoll is

How are the formation of the islands of Hawaii and of an atoll the same?

They are both related to volcanic activity. In the case of the Hawaiian island chain this is caused by a mantle hotspot leading to significant volcanism creating the volcanoes

What is the difference between an island and continent?

Geographically speaking, continents are bigger than islands. Geologically speaking, they are different in their rock density. Continents are made up of low-density rock, so

What is the difference between an island and a continent?

The answer depends on who you talk to.  A geographer - someone who studies Earth's surface, climate,  countries, peoples, and so on - might say that continents are big  and

What is the difference between an island and an archipelago?

An island is a body of land, smaller than a continent, completely surrounded by water. An archipelago is a series of islands that share a common origin, often volcanic. The Bi

What is an atoll?

An island of coral that encircles a lagoon partly or completely.

What is the difference between a key and an island?

The difference between a key and an island is a Key does not have a fresh water source. Also the weather will affect a Key. A hurricane can completely wipe out a key or a larg

What is the difference between high islands and low islands?

High Islands are large mountains and are formed from volcano. They have fertile soil and can grow crops. Low Islands are the opposite, they have poor soil and cannot produce

What is the difference between an island and a mainland?

An island is a body of land completely surrounded by water. A mainland is a larger body of land surrounded by water. A mainland is the largest of the other islands. A mainland

What is the difference between an island and a lake?

An island is piece of land that is surrounded by water on all its  sides whereas a lake is a water body that is surrounded by land on  all its sides.

What is different between an island and a continent?

A continent refers to any of the 7 main bodies of land in the world. The 7 continents are North America, South America, Europe, Asia, Africa, Australia, and Antarctica. An is