What are the function of the madreporite?

The madreporite is a key structure in echinoderms, primarily functioning as a sieve-like plate that allows water to enter the water vascular system. It plays a crucial role in regulating the internal water pressure, facilitating locomotion, feeding, and respiration in these animals. Additionally, the madreporite helps maintain the balance of fluids within the organism, contributing to its overall homeostasis.