KA MO'OLELO O MOLOKINI

THE HISTORY OF MOLOKINI

Molokini is a partially submerged volcanic crater that rises from the ocean floor about 2.5 miles off Maui's southwest coast. Formed over 230,000 years ago during the island's volcanic activity, this crescent-shaped islet is all that remains of a once-complete crater. Ocean erosion claimed the crater's seaward wall, creating the dramatic curved formation visible today. Ancient Hawaiians knew Molokini as Pu'u O Lāna'i and considered it sacred. The islet served various purposes throughout history, from a navigational landmark to a U.S. Navy bombing range during World War II. Today, Molokini is a Marine Life Conservation District and State Seabird Sanctuary, protecting its remarkable underwater ecosystem and the seabirds that nest on its slopes.

Geology

Molokini emerged from the Pacific Ocean over 230,000 years ago as a volcanic tuff cone during Maui's post-shield volcanic stage. The crater formed when hot lava met cold seawater, causing violent steam explosions that built up layers of volcanic ash and debris. What began as a circular crater rising above the waves has been dramatically reshaped by time and ocean forces.The crater's distinctive crescent shape is the result of millennia of wave erosion. The southern and southwestern walls of the crater bore the full force of ocean swells and eventually collapsed or eroded away, leaving only the northern arc rising 165 feet above sea level. Beneath the surface, the crater's floor rests at depths ranging from 30 to over 300 feet, creating diverse marine habitats.

Hawaiian Heritage

Ancient Hawaiians called Molokini "Pu'u O Lāna'i," meaning "Hill of Lāna'i," as the islet appears to connect visually with the neighboring island from certain vantage points. Hawaiian legend tells a different story of Molokini's origin. In this mo'olelo (story), Pele, the volcano goddess, fell in love with a handsome man who was already devoted to another woman. In her jealous rage, Pele transformed the rival into stone, creating the crescent islet we see today.For early Hawaiians, Molokini served as an important navigational marker for canoe travel between Maui, Kaho'olawe, and Lāna'i. The islet's prominence on the horizon made it a reliable reference point for ocean voyagers.

World War II: From Target Practice to Recovery

The 20th century brought dramatic and destructive changes to Molokini. During World War II, the U.S. Navy commandeered the uninhabited islet for military purposes, using it as a bombing and gunnery practice range. From 1941 through the war's end, Navy vessels and aircraft used Molokini's exposed slopes as targets for live-fire exercises, training servicemen for Pacific combat operations. The bombardment left lasting scars. Unexploded ordnance—bombs, shells, and ammunition that failed to detonate on impact—littered the crater and surrounding waters for decades after the war ended. These dangerous remnants posed serious risks to the fishermen and early recreational divers who began visiting the area in the 1950s and 1960s. The military artifacts served as grim reminders of Molokini's wartime service, visible in crater pockmarks and debris fields underwater.

Extensive cleanup efforts beginning in the 1970s and continuing through the 1980s worked to clear unexploded ordnance and military debris. Naval explosive ordnance disposal teams systematically surveyed the crater, detonating or removing dangerous materials. While most hazards have been eliminated, occasional discoveries of old military hardware remind visitors of this chapter in Molokini's history. Today, some divers still encounter fragments of shrapnel or shell casings embedded in the crater walls—tangible evidence of the island's role in World War II training operations.

New Purpose: Molokini's Conservation Era

By the 1960s and 1970s, recreational divers discovered Molokini's exceptional waters, transforming the war-scarred volcanic remnant into a sought-after marine destination. However, growing popularity brought overfishing, coral damage from anchors, aquarium fish collection, and disruption of seabird colonies. Without protection, the ecosystem faced degradation from the very popularity it attracted. Marine biologists and conservationists campaigned for preservation, succeeding in 1977 when Hawaii established Molokini as a Marine Life Conservation District—one of the state's first. This prohibited fishing and collecting, regulated anchoring, and established penalties for harming marine life. Hawaii later added State Seabird Sanctuary status, protecting species including wedge-tailed shearwaters and Bulwer's petrels.

The results were dramatic. Fish populations rebounded, coral coverage increased, and depleted species returned. Today, strict regulations require boats to use mooring buoys rather than anchors, and all commercial operators must obtain environmental permits. Taking any marine life is prohibited. These protections have proven remarkably successful—Molokini now welcomes hundreds of thousands of visitors annually while maintaining ecological integrity. The crater that once absorbed explosive ordnance now absorbs visitors' wonder, demonstrating that tourism and conservation can coexist with proper management.

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Molokini Crater and Turtle Town Snorkeling
Tour Overview

Get an up-close view of Maui’s coastal scenery—and leave the mainland behind for half a day of exploration—on this immersive snorkeling excursion. Visit the Molokini Crater and Turtle Town, where you can snorkel in clear waters, spy marine life, and soak up the Pacific beauty.

This convenient package includes a light lunch, snacks, beverages, and snorkel gear, so you don't have to worry about packing supplies.