Glass SpongeDayton H.
Glass Sponge skeletons are made entirely of silica – making their bodies rigid. Although Glass Sponges can be found in oceans all over the world they are especially abundant in Antarctic seas. Sponges pass water through their bodies and feed on tiny particles. A Glass Sponge skeleton containing a pair of shrimp is often given as a wedding gift in Japan.
Graphic by Bilexis Casado