Common name: Sponge Order Tethyida

The order Tethyida encompasses a group of marine sponges known for their fascinating morphological diversity and complex skeletal structures. Members of this order are characterized by their siliceous spicules and spongin fibers, which provide support and deter predators. Tethyida sponges are filter feeders, playing a crucial role in nutrient cycling within reef ecosystems. They can be colorful additions to a reef aquarium, but require stable water conditions and low to moderate flow to thrive. Hobbyists should note that these sponges often have specific feeding requirements, needing a supply of fine particulate organic matter to sustain their filter-feeding lifestyle.

1. 
   Common name: Branching Hammer Coral

   Scientific name: Adreus fascicularis
2. 
   Common name: orange puffball sponge

   Scientific name: Tethya aurantium