3. Hanauma Bay Nature Preserve
Formed within the crater of a volcano on the island of Oahu, Hanauma Bay is a unique protected bay, which has been popular with snorkelers for a long time. After overuse caused pollution and damage to the delicate reef ecosystem, restoration efforts have restored the bay to its original splendor, and it is again open to visitors.
4. Volcanoes National Park
Located on the Big Island of Hawaii, Volcanoes National Park offers a unique, close-up look at an active volcano system where lava seeps from fissures in the earth. The surrounding landscape is shaped by cooled lava rock, both old and new, which has flowed over roads in a display of its unstoppable force.
