Types of arteries and veins. There are two types of arteries in the body: Pulmonary and systemic. The pulmonary artery carries deoxygenated blood from the heart, to the lungs, for purification while the systemic arteries form a network of arteries that carry oxygenated blood from the heart to other parts of the body.rteries carry oxygenated blood (with the exception of the pulmonary artery and umbilical artery). Veins carry deoxygenated blood (with the exception of pulmonary veins and umbilical vein).
[Oahu:6 Maui:8 Kauai:7 Big Island:10] The Kona coast of the Big Island tends to have the clearest water and offers the best snorkeling in Hawaii. Maui and Kauai both have several prominent snorkeling locations, although Kauaiâs best snorkeling is more subject to ocean conditions.
The warm waters of the Northeast have the best snorkeling. The Coral Coast, which extends from northern Alagaos into southern Pernambuco, offers a 135-kilometer (84-mile) stretch of protected reefs that are ideal for snorkeling.