Hexactinellida (can also be called Triaxonida or Hyalospongiae) (glass sponges) are identified from their skeleton like structure that consists of spiracles made of siliceous (glass). These sponges are more found in the deeper waters of the ocean. They possess a cubic three rayed symmetry which makes them more easily identified. They are normally yellow to white in color and can grow from 0.1-0.3 meters.