Channels of the Hawaiian Islands Maui. Although the channel is only about at its shortest point, it is one of the windiest and roughest in the Hawaiian Islands. The Kalohi Channel is the stretch of water separating Lānaʻi and Molokaʻi. Depth of water in this channel is about and width is . This is one of the less treacherous channels between islands in the archipelago, although strong winds and choppy sea conditions are frequent. Kalolohia beach on the Lānaʻi coast is also known as "Shipwreck Beach" because of a wreck on the reef there. Kalohi means "the slowness." The Kaiwi Channel (also known as the
Endemism in the Hawaiian Islands survive in the islands and whatever else was needed to reproduce. The narrowing of the gene pool meant that at the very beginning, the population of a colonizing species was a bit different from that of the remove, contributing population. Throughout time, the Hawaiian Islands formed linearly from northwest to the southeast. A study was conducted to determine the approximate ages of the Hawaiian Islands using K–Ar dating of the oldest found igneous rocks from each island. Kauai was determined to be about 5.1 million years old, Oahu about 3.7 million years old and the youngest island of Hawaii about