Problem
Threatened species of Coelenterates
Experimental visualization of narrower problems
Other Names:
Threatened species of CoelenterataThreatened species of Cnidaria
Endangered species of marine polyps
Threatened species of medusas
Threatened species of jellyfish
Background:
Coelenterates comprise more than 9000 species, including coral, hydra, jellyfish, Portuguese man-of-war, and sea anemone distributed in all oceans. Only a few species are known to inhabit fresh water. Two forms of coelenterates exist, the polyp and the medusa. The phylum is divided into three classes: one in which the polyp form predominates; a second consisting solely of polyp forms; and a third composed primarily of medusa forms. The polyp form, such as the reef-building coral, occurs in colonies. It has a plant like appearance and attaches itself to rocks or debris on the sea bottom. By contrast, with rare exceptions, the medusae swim freely. Coelenterates grow only if well fed and shrink if starved.
Broader Problems:
Threatened aquatic marine speciesThreatened species of Invertebrates Narrower Problems:
Threatened species of CubozoaThreatened species of MyxozoaThreatened species of HydrozoaExtinct species of DipleurozoaThreatened species of AnthozoaExtinct species of HydroconozoaExtinct species of ProtomedusaeThreatened species of Scyphozoa Strategies:
Maintaining biodiversity of marine species Values:
EndangeredThreat Subject(s):
Fish, Reptiles → FishInvertebrates → Protozoa, parazoa, coelenterata
Oceanography → Marine
Societal Problems → Endangered species
Related UN Sustainable Development Goals:
Problem Type:
C: Cross-sectoral problems Date of last update
16.04.2019 – 16:25 CEST