Explore Kona’s Night-and-Day Underwater Thrills

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Jeanne Cooper

After two decades of visiting Hawaii as a travel writer and wife of a triathlete, Jeanne now shares news and views of the islands from her home base on the Kohala Coast.
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On the west side of Hawai‘i Island, Kailua-Kona stands out for giving visitors options for nightlife as well as daytime fun. The coast around Kona — as both the town and the region are widely known — also provides enticing adventures before and after the sun goes down.

By day, kayakers and catamarans bob in the clear waters of Kealakekua Bay, a premier snorkeling site thanks to its abundant coral reefs teeming with brilliantly hued fish. Three companies are permitted to lead kayaking tours to the scenic, cliff-lined bay, part of a state historical park that includes an ancient stone temple (heiau), hidden burial sites and the Captain Cook Monument, noting where the British explorer was killed in skirmish with Native Hawaiians in 1779.

Underwater Kona scene featuring colorful fish swimming around coral reefs. The vibrant fish, mainly yellow and orange with striped patterns, glide through clear blue water. Coral formations occupy the lower part of the image, providing a vivid backdrop.
Kikakapu Fish in Kona credit: Kawika Singson

Aloha Kayak Co., owned by a Native Hawaiian family, offers twice-daily 3.5-hour kayak tours with snorkeling in Kealakekua Bay and a landing at Ka‘awaloa Flats, site of the Captain Cook Monument. Limited to just 12 people, and conveniently departing from the south,  the tours fill up quickly. Aloha Kayak also departs from Keauhou Bay for a 4-mile paddling tour that visits sea caves created by lava tubes and includes snorkeling and — for the daring — cliff jumping into the ocean.  During both tours guides share stories about the Hawaiian culture and history associated with the area, such as the birth of King Kamehameha III at Keauhou Bay and the battlefield graveyard above the sea caves of Kuamo‘o Bay.

A manta ray glides gracefully through the clear Kona underwater blue ocean waters with some rocks and sand visible on the sea floor below. The majestic creature's wing-like fins are spread wide, creating an elegant silhouette against the deep blue background.
Manta Ray off Hawaii Island credit: Kawika Singson

Keauhou Bay is also renowned for near-nightly visits by manta rays (hahalua in Hawaiian), one of a handful of spots in Hawai‘i (and the world) that can make that claim. These enormous black-and-white creatures, with wingspans up to 28 feet, spiral and somersault as they feed on plankton attracted by lights shining in the water. While the secret of their regular appearanecs has long been out, Aloha Kayak Co.’s evening tours provide a nimble way to find the best viewing and snorkeling spot on any particular night, with less than a quarter-mile of paddling required. Just keep in mind that these underwater gentle giants are wild, with only “patience and plankton” to lure them, as Aloha Kayak’s websites notes.

Two people snorkeling in the crystal-clear, turquoise waters of Kona over a vibrant coral reef. A rocky cliff rises above the waterline in the background, partially blurred by motion and light refraction. The scene captures a blend of underwater and above-water views.
Snorkelers in Kealakekua Bay credit: Heather Goodman

You can also spy mantas from the Manta Center and illuminated shoreline around Outrigger Kona Resort and Spa, overlooking Keauhou Bay. The resort offers manta education talks in its Manta Center and can books guests on evening manta snorkeling tours aboard the Kini Kini, a 40-foot Hawaiian sailing canoe,  and the 30-foot Nainoa.

Underwater scene of a coral reef with vibrant yellow and black fish swimming among rocks and coral formations. The clear blue water off Kona allows sunlight to filter through, illuminating the marine life and the vibrant colors of the coral.
Kealakekua Bay Reef Fish credit: Heather Goodman
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