EVERYDAY SCIENCE

Detailed explanation-1: -Hexactinellid sponges are sponges with a skeleton made of four-and/or six-pointed siliceous spicules, often referred to as glass sponges.

Detailed explanation-2: -Glass sponges in the class Hexactinellida are animals commonly found in the deep ocean. Their tissues contain glass-like structural particles, called spicules, that are made of silica (hence their name).

Detailed explanation-3: -Sponges in the Class Hexactinellida are commonly called glass sponges because their six-rayed spicules are made silica.

Detailed explanation-4: -The hexactinellids, or glass sponges, are characterized by siliceous spicules consisting of six rays intersecting at right angles, much like a toy jack. Hexactinellids are widely viewed as an early branch within the Porifera because there are major differences between extant hexactinellids and other sponges.

Detailed explanation-5: -Hexactinellids. They are found in marine and the deep sea. The skeleton is made up of six-rayed siliceous spicules.