The atoll of Tetiʻaroa in French Polynesia An atoll (/ ˈæt.ɒl, - ɔːl, - oʊl, əˈtɒl, - ˈtɔːl, - ˈtoʊl /) [1] is a ring-shaped island, including a coral rim that encircles a lagoon. There may be coral islands or cays on …

Atoll, coral reef enclosing a lagoon. atoll, coral reef enclosing a lagoon. Atolls consist of ribbons of reef that may not always be circular but whose broad configuration is a closed shape up to dozens of …

Atoll islands appear as rings of coral and sand encircling clear lagoons. These formations, often found in tropical oceans, evoke secluded paradise. Their distinctive shapes and remote locations have long …

Oct 19, 2023 · An atoll is a ring-shaped coral reef, island, or series of islets. An atoll surrounds a body of water called a lagoon. Sometimes, atolls and lagoons protect a central island. Channels between …

Mar 19, 2025 · An atoll is a ring of coral that originally grew completely around the shoreline of an island, and which continued to grow upward on top of itself as the island subsided or eroded away. As reef …

Atoll Facts and Information. For reef scientists, atolls are broadly defined as large, ring-shaped coral reefs that surround a central lagoon.

May 10, 2025 · What is an Atoll and what makes them unique: ring-shaped coral reefs surrounding lagoons formed where volcanic islands once stood.

The meaning of ATOLL is a coral island consisting of a reef surrounding a lagoon. Did you know?

Aug 12, 2024 · Atolls are ring-shaped coral reefs, islands, or a series of islets that encircle a lagoon either partially or completely.

ATOLL definition: 1. a ring-shaped island formed of coral (= rock-like natural substance) that surrounds a lagoon…. Learn more.