Disporella separata Osborn, 1953
Common name(s): Purple encrusting bryozoan
Phylum Bryozoa (Ectoprocta)
|A Disporella separata colony from 10 m depth, Burrows Channel. The colony is 5 cm across and there are several tubeworms living in it, extending their tentacles.|
|(Photo by: Dave Cowles, July 2007)|
How to Distinguish from Similar Species: The colony at first glance may look like a purple sponge, but it is hard and the circular clusters of zooecia can be seen without magnification (see above). Several other species such as Disporella fimbriata form small colonies not divided into subclusters and not colored purple.
Geographical Range: From British Columbia to southern California
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General Notes and Observations: Locations, abundances, unusual behaviors:
In this closeup view the individual zooids can be seen. The surface of the colony is covered with circular clusters of groups of elevated zooids with non-elevated zooids between and within the circles.
Another view also shows the circular groups of clusters of elevated zooecia.
A dead patch on the colony clearly shows the encrusted tubes the colony is made of