1. Fish: Fish are the most well-known animals that have gill chambers. They use their gills to extract oxygen from the water as it passes through their mouths and over their gills. Each gill chamber usually contains multiple gill filaments, which increase the surface area for gas exchange.
2. Amphibians: Certain amphibians, such as tadpoles and some salamanders, have gill chambers during their larval stages. These gill chambers help them breathe while they are still in the water. As they mature and develop lungs, their gill chambers eventually disappear.
3. Crustaceans: Many crustaceans, including crabs, lobsters, and shrimp, have gill chambers. Their gill chambers are located on the sides of their bodies and are covered by a flap of tissue called the operculum. Water flows through the gill chambers, allowing oxygen to be absorbed by the gills.
4. Mollusks: Some mollusks, such as clams, mussels, and scallops, have gill chambers. They use their gills to filter food particles and extract oxygen from the water. The gill chamber in mollusks is typically lined with cilia, which help move water over the gills.
5. Echinoderms: Some echinoderms, such as sea urchins and sea cucumbers, have rudimentary gill chambers. The gill chambers in these animals are not as complex as those found in other groups and are mainly involved in gas exchange and feeding.
It's important to note that not all aquatic animals have gill chambers, and there are many other mechanisms for extracting oxygen from water. For example, some animals, such as insects and aquatic mammals, use spiracles or lungs for respiration.