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  2. Coral reef - Wikipedia

    en.wikipedia.org/wiki/Coral_reef

    A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. [1] Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and ...

  3. Coral - Wikipedia

    en.wikipedia.org/wiki/Coral

    Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of very many genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in height.

  4. Survival mode - Wikipedia

    en.wikipedia.org/wiki/Survival_mode

    Rampart, released in 1991, is the first prototypical survival game mode in tower defense games. [5] Survival mode is particularly common among tower defense games, such as Plants vs. Zombies. [6] where the player must improve the defenses of a specific location in order to repel enemy forces for as long as possible. [7]

  5. In a battle for survival, coral reefs get a second chance ...

    www.aol.com/news/battle-survival-coral-reefs...

    Experts say dying corals are animals, vegetables and minerals, so the fight to save them is anything but simple.

  6. Tabulata - Wikipedia

    en.wikipedia.org/wiki/Tabulata

    Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral. They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb. Adjacent cells are joined by small pores.

  7. Hot seawater killed most of cultivated coral in Florida Keys ...

    www.aol.com/news/hot-seawater-killed-most...

    In the five reefs the team visited, they did see some wild coral alive and well, Lesneski said. Brain or boulder coral seemed to do better, but still had large amounts of death, she said.

  8. Scleractinia - Wikipedia

    en.wikipedia.org/wiki/Scleractinia

    Scleractinia, also called stony corals or hard corals, are marine animals in the phylum Cnidaria that build themselves a hard skeleton.The individual animals are known as polyps and have a cylindrical body crowned by an oral disc in which a mouth is fringed with tentacles.

  9. Survivalcraft - Wikipedia

    en.wikipedia.org/wiki/Survivalcraft

    The game has six different game modes: Survival, Challenging, Cruel, Harmless, Adventure, and Creative. The first four involve the player gathering necessary resources to stay alive. The Creative mode gives the player unlimited items and health, and the Adventure mode is used for quest and parkour maps.