Biodiversity & Conservation

An encrusting bryozoan - Umbonula littoralis - General information


Umbonula littoralis

Image Keith Hiscock - Two colonies in the infralittoral fringe. Image width ca 3 cm.
Image copyright information

Distribution map

Umbonula littoralis recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

Why do the maps differ?

Sightings Have you seen Umbonula littoralis?
If so please submit your record.


Umbonula littoralis is not listed under any importance categories.


General information

Key Icon Researched by: Dr Keith Hiscock Text page icon Refereed by: Dr Peter J. Hayward

Taxonomy icon Taxonomy

Phylum Bryozoa Sea mats, horn wrack & lace corals
Class Gymnolaemata
Map icon Recorded distribution in Britain and Ireland Present all around the British Isles.
Habitat information icon Habitat information A characteristic species of the sublittoral fringe and underboulder habitats. Occurs on rock and on Laminaria spp. holdfasts and Himanthalia elongata buttons.
Text page icon Description Colonies form large orange crusts that spread irregularly and are often fringed with green.

This review can be cited as follows:

Dr Keith Hiscock 2005. Umbonula littoralis. An encrusting bryozoan. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 18/05/2013]. Available from: <http://www.marlin.ac.uk/speciesfullreview.php?speciesID=4545>