Friday, January 6, 2012

Sponges and their skeletons

Images of sea sponges from the Report on the Hexactinellida collected by H.M.S. Challenger during the Years1873-76; each image shows a sponge framed by examples of the glass-like spines (called spicules) which make up its "skeleton":
Sea cucumbers also have attractive mineralized parts called spicules, but these function as external armor rather than internal support.

No comments:

Post a Comment