Hexactinellid Sponges [Amphidiscosida]

Description

Amphidiscosida, also known as hexactinellid sponges, belong to a group of glass sponges (Hexactinellida) characterized by their unique skeletal structure made mostly of silica. These marine organisms are found in deep-sea environments and are known for their intricate and often beautiful lattice-like skeletal frames. Members of this order are characterized by the presence of amphidisc microscleres, which are double-disc spicules, alongside their hexactinellid structure. They play a crucial role in deep-sea ecosystems by providing habitat for a variety of marine life and participating in the deep-sea silica cycle. The order encompasses a variety of species that exhibit a wide range of shapes and sizes, from vase-shaped to fan-like structures. Despite their fragile appearance, these sponges are adept at surviving in the harsh conditions of the deep sea.