Comprehensive Description

Read full entry


 A low, spreading cushion of up to 2 cm thickness with a base diameter of up to 12 cm. The sponge surface is hard and rough with a variable number of erect projections bearing a terminal opening (papillae) that may be as tall as 12 cm. The main body mass is pale, usually greyish yellow or more rarely, orangey yellow, and is often buried in sediment with only the papillae visible. The papillae are smooth and clean, creamy white or pale yellow, sometimes translucent, and often a fine network of spicules can be seen on their surface. The exhalant papillae are large and few in number, the inhalant papillae are smaller.May be confused with Polymastia robusta, however the papillae of this closely related species tend to fuse together, which does not occur in Polymastia mamillaris.


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!