By far the best-studied benthos are the macrobenthos, those forms larger than 1 mm (0.04 inch), which are dominated by polychaete worms, pelecypods, anthozoans, echinoderms, sponges, ascidians, and crustaceans.
Gargling with salt water several times a day is an effective treatment for chest congestion. While the salt helps remove mucus from the respiratory tract, the hot water reduces irritation in the throat. 1  Add 1 teaspoon of salt to a glass of warm water.  Mix well until the salt is dissolved thoroughly.
Tea tree oil is said to be helpful in alleviating chest and head congestion, stuffy nose, and other symptoms of colds and flu. In aromatherapy, tea tree oil is said to be helpful in alleviating chest and head congestion, stuffy nose, and other symptoms of colds and flu, especially when used in steam inhalation.