This short communication had compared distribution through times between two taxa: Actiniaria and Rugosa. This analysis can to see distribution larval is unlucky when planulae larvae swimming to find out a substratum and this distribution disappeared

These organisms are the natural food for fish of all kinds, and these plankton are found in different layers of water. The plant type is called (phytoplankton), as it contains a chloroplast in order to carry out the process of photosynthesis, and this

Cnidarians are the most primitive metazoans, but their evolutionary relationships are poorly understood, although recent studies present several phylogenetic hypotheses. Here, we collected 266 complete cnidarian mitochondrial genomes and re‐evaluated