Channels of the Hawaiian Islands Channels of the Hawaiian Islands In an archipelago like the Hawaiian Islands the water between islands is typically called a "channel" or "passage". Described here are the channels between the islands of Hawaiʻi, arranged from southeast to northwest. The ʻAlenuihāhā separates the island of Hawaiʻi and the island of Maui. The maximum depth of this channel is , and the channel is 30 miles wide. There is a significant wind funnel effect in the channel, which is subject to scientific investigations. ʻAlenuihāhā means "great billows smashing." The ʻAlalākeiki Channel separates the islands of Kahoʻolawe and Maui, at a distance of
Hawaiian Islands in the solar system, as it is 2 km taller than Mars' Olympus Mons. The Hawaiian Islands have many earthquakes, generally caused by volcanic activity. Most of the early earthquake monitoring took place in Hilo, by missionaries Titus Coan, Sarah J. Lyman and her family. From 1833 to 1896, approximately 4 or 5 earthquakes were reported per year. Hawaii accounted for 7.3% of the United States' reported earthquakes with a magnitude 3.5 or greater from 1974 to 2003, with a total 1533 earthquakes. Hawaii ranked as the state with the third most earthquakes over this time period, after Alaska and