Crayfish excrete waste primarily through specialized structures known as green glands, located near their eyes. These glands filter waste from the blood and help in the excretion of ammonia, a toxic byproduct of protein metabolism. The ammonia is then secreted into the surrounding water.
The crayfish’s waste management system is essential for maintaining its internal balance and keeping levels of harmful substances low. In addition to the green glands, crayfish also expel some waste through their gills, which allows for efficient removal of waste products while they breathe.
Overall, crayfish have adapted to their aquatic environment, using their excretory systems to process and eliminate waste effectively, thus ensuring their survival and health in their natural habitats.