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Marine Animal Encyclopedia

Mediterranean Bath Sponge Spongia officinalis adriatica

The Mediterranean bath sponge, as its name suggests, is collected and processed for use as a bath sponge. It grows as rounded cushions and mounds, and is usually dull gray to black outside but yellowish white inside. It can be used as a sponge because it has no sharp skeletal spicules, just a network of tough fibers made from an elastic material called spongin. Huge numbers were once harvested, but today they are rare.

Mediterranean Bath Spongezoom image
  • Class Demospongiae
  • Width Up to 14 in (35 cm)
  • Depth 3–165 ft (1–50 m)
  • Habitat Rocks
  • Distribution Mediterranean, especially the eastern part
Mediterranean Bath Sponge habitat mapzoom image