the hard, variously colored, calcareous skeleton secreted by certain marine polyps. 2. such skeletons collectively, forming reefs, islands, etc. 3. the solitary or colonial polyp that secretes this calcareous skeleton.
Ancient methanogens are the source of natural gas. Halophiles are bacteria that thrive in high salt concentrations such as those found in salt lakes or pools of sea water. Thermophiles are the heat-loving bacteria found near hydrothermal vents and hot springs.
An example of a Euryarchaeota is Halobacterium which includes several species of organisms that are found in salt lakes and high saline ocean environments. Korachaeota. This is the name given to the Archaebacteria that do not fall under the Crenarchaeota or Euryarchaeota phyla.ver 250 known species of archaea exist, all of which have been classified into three main phyla (Ramel, n.d.) : 1. Crenarchaeota. 2. Euryarchaeota. 3. Korarchaeota. Crenarchaeota. The members of this phylum are known to be extremophiles.