In mammals and fish it is lungs
All sponges don't have respiratory organs. Instead, individual sponges breath for the sponge.
The respiratory system is the system that handles breathing.
Sponges do not have blood. They do not have a circulatory system either.
The Respiratory System
SPonges have no respiratory or excretory organs; these functions are preformed by diffusion.
The trachea is the airway in the respiratory system.
The larynx belongs to the respiratory system.
No
no, they do not have a respiratory system
how does the respiratory system work
The respiratory system.