Distribution in scandinavian waters
Maximum length: The colonies
be can several decimetres in size, but under extreme circumstances be
larger than 1 metre. The individual zooeciums are about 0,5 mm in size.
Appearance: The thin, but hard chalky colonies of sea-mats are
smooth and rounded. Their colour is comprises of different shades
of white and grey. The zooeciums are often square in form and furnished
with short blunt barbs in each corner.
Compare the sea-mat with the hairy
sea-mat and the other varities
of sea- mat.
Depth: 0-50 m.
Environment: Sea mats live on brown algae, mainly kelp
Misc: Sea-mats catch and eat
small suspened particles in the water. Very few creatures prey on
sea mats, but certain species of sea-spiders, sea urchins and nudibranchs
Classification: The hairy sea-mat is a member of the ectoprocts.