This section requires expansion with: with a description of the zones and temperature ranges, as well as other details concerning ecology and ecosystem. (February 2016)
Genus Laurencia is found globally on shores in temperate to tropical area, "littoral to sublittoral," and are seen at depths up to 65 m deep. A variety of species are found near the British Isles (see below).
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The Agaebase, a database with detailed information on species of Laurencia, includes 145 taxonomically accepted species as of October 2015, and differentiates these from a further ~375 entries of uncertain taxonomic status, and further delineates homotypic or heterotypic synonyms.