Coral
Query URLs
https://term.museum-digital.de/md-de/tag/4235
- Note
- Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. 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. A set of tentacles surround a central mouth opening. Each polyp excretes an exoskeleton near the base. Over many generations, the colony thus creates a skeleton characteristic of the species which can measure up to several meters in size. Individual colonies grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously overnight, often around a full moon. Fertilized eggs form planulae, a mobile early form of the coral polyp which, when mature, settles to form a new colony.
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Kühlmanns Steinkoralle
Stylophora kuehlmanni Scheer...
Object information
Image: Thüringer Landesmuseum Heidecksburg - CC BY-NC-SA -
Lederkoralle
Lederkorallen (Alcyoniidae)...
Object information
Image: Thüringer Landesmuseum Heidecksburg - CC BY-NC-SA -
Lederkoralle (Antiphates Dicho)
Lederkorallen (Alcyoniidae)...
Object information
Image: Thüringer Landesmuseum Heidecksburg - CC BY-NC-SA -
Lederkoralle (Melita ochracea)
Lederkorallen (Alcyoniidae)...
Object information
Image: Thüringer Landesmuseum Heidecksburg - CC BY-NC-SA -
Koralle Acanthophyllum
Dies ist die Runzelkoralle...
Object information
Image: Geomuseum der WWU Münster - CC BY-NC-SA
References
Synonyms
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