What is a spicule?
Most sponges build skeletons composed of spicules—structural elements that occur in a wide range of sizes and three-dimensional forms. Because spicule shapes are often distinctive to particular clades or even individual species, they serve as especially valuable tools for taxonomic classification.
Spicules by type, name, and taxonomy
Explore the diversity of sponge spicules using a comprehensive database of their morphological types.