Mike Clinton
Introduction: Defining Spicules in Sponges
Sponges are a diverse group of aquatic animals that play important ecological roles in marine ecosystems. One of the defining features of these animals is the presence of spicules, which are small, needle-like structures made of calcium carbonate or silica that form the skeleton of the sponge. Spicules are found in all sponge species and they play a crucial role in supporting the architecture of the sponge’s body, protecting it from predators, and helping it adapt to its environment. In this article, we will explore the significance of spicules in sponges and their importance in various ecological, evolutionary, and biomedical contexts.
The Role of Spicules in Supporting Sponges
One of the most important functions of spicules in sponges is to provide structural support. Sponges lack a true skeleton, so spicules serve as the main framework that gives the sponge its shape and structure. Spicules form a lattice-like network within the sponge’s body, providing a strong and flexible framework that can withstand the forces of water currents, waves, and predators. In addition to supporting the sponge’s body, spicules also help to anchor it to the seafloor or other substrates, preventing it from being swept away by currents. Some species of sponges have spicules that are so large and sturdy that they can be used for construction or even as tools in human culture.