About 70 results for ‘Coral’
-
Coral
Corals are marine animals in class Anthozoa of phylum Cnidaria typically living in compact colonies of many identical individual "polyps". The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "head" is a colony of myriad genetically identical polyps. Each polyp is a spineless animal typically only a few millimeters in diameter and a few centimeters in length. A set of tentacles surround a central mouth opening. An exoskeleton is excreted near the base. Over many generations, the colony thus creates a large skeleton that is characteristic of the species. Individual heads grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously over a period of one to several nights around a full moon. Although corals can catch small fish and plankton, using stinging cells on their tentacles, most corals obtain the majority of their energy and nutrients from photosynthetic unicellular algae called zooxanthellae that live within the coral's tissue. Such corals require sunlight and grow in clear, shallow water, typically at depths shallower than 60 metres (200 ft). Corals can be major contributors to the physical structure of the coral reefs that develop in tropical and subtropical waters, such as the enormous Great Barrier Reef off the coast of Queensland, Australia. Other corals do not have associated algae and can live in much deeper water, with the cold-water genus Lophelia surviving as deep as 3,000 metres (9,800 ft). Examples live on the Darwin Mounds located north-west of Cape Wrath, Scotland. Corals have also been found off the coast of the U.S. in Washington State and the Aleutian Islands in Alaska.
-
-
-
- Artist(s):
- Jean-Jacques Henner
Portrait de femme au collier de corail
-
- Field(s):
- Painting
-
- Date:
- 19th century
-
-
LA VIERGE ET L'ENFANT ENTOURES DE SIX SAINTS ET ADORES PA...
-
- Field(s):
- Painting
-
- Portrayed subject:
- Bird
- Blessing
- Child
- Child Jesus
- Coral
- Elizabeth (biblical figure)
- …
-
- Date:
- 15th century
-
-
LA VIERGE ET L'ENFANT TRONANT ENTRE SAINT JEAN BAPTISTE E...
-
- Field(s):
- Painting
-
- Portrayed subject:
- Child Jesus
- Coral
- John the Baptist
- Madonna (art)
- Painting
- Relief
-
- Date:
- 15th century
-
-
-
Rocher et poissons [titre attribué]
-
- Field(s):
- Ceramic
-
- Portrayed subject:
- Batoidea
- Coral
- Fish
- Still life
-
- Date:
- 20th century
-
-
-
-
- Artist(s):
- Pierre Mignard
Le roi Céphée et la reine Cassiopée remerciant Persée d'a...
-
- Field(s):
- Painting
-
- Portrayed subject:
- Andromeda (mythology)
- Blood
- Cassiopeia (mythology)
- Cepheus, King of Aethiopia
- Coral
- Dragon
- …
-
- Date:
- 17th century
-
-
-
- Artist(s):
- Gustave Moreau
Carnet d'études orientales. Feuille d'études diverses
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
- Rhinoceros
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de corail
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Feuille d'études de coraux et méduses
-
- Field(s):
- Drawing
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de massif coralien
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Feuille d'études de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Feuille d'études de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etudes de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etudes de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
-
- Artist(s):
- Gustave Moreau
Etude de corail
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de coraux
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de corail
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
-
-
- Artist(s):
- Gustave Moreau
Etude de corail
-
- Field(s):
- Drawing
-
- Portrayed subject:
- Coral
-
- Date:
- 19th century
-
