I was floating in the wide saline lagoon of the Grand Hyatt Kauai, drifting along on my back. Buoyed by the semi-salty water, I watched the palm fronds waving in the trade winds above me, silhouetted against the blue Pacific sky. As a deep out-of-body sense of relaxation overcame me and time seemed to slow, it made me think: does it seriously get any better than this?
In Hawaii, many resorts pull out all the stops to create over-the-top poolside settings and experiences. Whether you’re lounging in an in-water chaise or being treated like Hollywood royalty in a private cabana, drifting in slow motion down a “lazy river” or floating at the edge of an infinity pool while soaking up a Hawaiian sunset, your pool experiences can be among the most memorable highlights of a Hawaiian vacation.
If you’re feeling the urge for some Hawaiian-style poolside pampering, here are some of my favorite resorts to check out in the Hawaiian islands. Whatever pool paradise you choose, remember that Hawaii’s magic extends far beyond the resorts. Make sure to take the time to explore the islands’ stunning beaches, hike through lush rainforests, experience the rich local culture and splash in some of the natural pools — you’ll find suggestions on that score below, too.
Kauai
A long lazy river flows through the lush landscaping at the Grand Hyatt Kauai. (Courtesy Ben Davidson Photography)
Grand Hyatt Kauai’s massive pool complex of palm tree-lined terraces and lushly landscaped oases, has something for everyone, including a long lazy river and a large, wonderfully relaxing saline lagoon just feet from Shipwreck Beach and the ocean surf. Details: hyatt.com
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Also in Poipu, the Koloa Landing Resort has been honored with a “Best Pool in America” accolade by USA Today several years running. A huge waterfall overflowing a rock arch is the centerpiece of the main pool, but my favorite aquatic escape at the resort is the secluded adult pool and hot tub, set away from the busy main pool complex. Details: koloalandingresort.com
Maui
In West Maui’s Ka’anapali resort region, Westin Maui Resort & Spa’s lush pool complex is just feet from the beach and includes an adult pool on the upper terrace and lower pool with a waterslide that’s a hit with kids and adults. An infinity pool for adults features a sandy bottom, perfect for wiggling your toes while sipping a tropical drink from the nearby poolside bar. Details: westinmaui.com
On Ka’anapali beach, the Westin Maui Resort & Spa’s lush pool complex includes an epic waterslide that’s a hit with kids and adults. (Ben Davidson Photography)
At the far end of the main stretch of Ka’anapali Beach, the Sheraton Maui Resort and Spa’s pool is longer than a football field and has two swimming areas connected by a river. You can float between them, past waterfalls and tropical trees, plants and flowers. At one end, a family area includes a slide and shallow section for children. The other end has cabanas and a bar and is geared for adults.
Located between the pool and the beach, the Cliff Dive Grill provides prime seats for the spectacular nightly sunset torch-lighting and cliff dive ceremony at the promontory called Pu’u Kekaa (aka Black Rock). Details: sheraton-maui.com
At sunset on Ka’anapali Beach, guests at the Sheraton Maui Resort and Spa gather to watch the spectacular nightly torch-lighting and cliff dive ceremony at Pu’u Kekaa. (Ben Davidson Photography)
In South Maui, the Wailea Beach Resort boasts several pools, including the serene Maluhia infinity edge pool overlooking the popular Wailea coastal path and the new Olakino wellness pool (reservations required), where poolside offerings include mini-massages, wellness workshops and wellness drinks and food.
Don’t miss the resort’s Nalu Adventure Pool, featuring the highest waterslides in Hawaii — a top attraction for thrillists seeking helter skelter descents through two slippery tubes. Details: waileabeachresort.com
Next door, the Grand Wailea, a Waldorf Astoria Resort, draws thrill seekers to experience the Lava Tube Slide and its exhilarating three-story drop at speeds up to 22 miles per hour. The sprawling resort complex boasts multiple pools, including the thrilling Wailea Canyon River Ride. Take a raft down twists, turns and waterfalls—a surefire way to cool off and get your adrenaline pumping. Details: grandwailea.com
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Oahu
Aulani, A Disney Resort & Spa, on Ko Olina Bay is where Disney magic meets Hawaii. Aulani’s pool complex offers family-oriented swim and water play spots ranging from the whimsical water fountain wonderland of the Menehune Bridge to the 3,800-square foot Rainbow Reef, a private lagoon where you can swim with ocean fish. An infinity pool and several whirlpool spas are perfect for parental rest and relaxation.
Aulani, the Disney resort on Oahu’s Ko Olina Bay, offers all sorts of water play options, including the 3,800-square foot Rainbow Reef, a private lagoon where you can swim with ocean fish. (Courtesy Disney Aulani)
Kids will love the lazy river, the Keiki Cove splash zone with its water jets and slides or the more elaborate 2,100-square-foot Menehune Bridge splash zone, and the chance to meet Disney characters. Adults can unwind in the adult-exclusive pool or soak in a hot tub. Details: disneyaulani.com
The water play attractions at Oahu’s Aulani, A Disney Resort & Spa on Ko Olina Bay include this elaborate 2,100-square-foot Menehune Bridge splash zone. (Courtesy Disney Aulani)
Sheraton Waikiki Helumoa Playground offers two pools, two whirlpools, a water slide and a fountain play area for kids, all right beside the ocean and Waikiki Beach. There are 17 in-water chaise lounges. And during the summer — at midday Tuesday through Saturday — Citrine the mermaid, Tinker Fairy, Spider Super Hero, Polynesian Princess, Polynesian Warrior or another costumed character entertains children with storytelling, games and tricks. Details: marriott.com/hotels/travel/hnlws-sheraton-waikiki
Island of Hawaii
The luxurious Four Seasons Hualalai in Kailua-Kona has seven swimming pools ranging from oceanside lagoons to adults-only sanctuaries. Most unusual is the recently renovated King’s Pond, which provides a 1.8-million gallon swimmable aquarium hosting more than 1,000 tropical fish and more than 60 species that you can swim with — including the resort’s resident eagle ray, Kainalu. The pond also has an adjoining lounge pool and sun deck.
The swim-up bar at the Palm Grove Pool is a popular choice for in-water libations, a perfect place to gaze out at the endless blue Pacific Ocean or take a dip. Details: fourseasons.com/hualalai
The Hilton Waikoloa Village features multiple pools, each with its own unique charm. The jewel of the resort is a swimmable, four-acre saltwater lagoon connected to the ocean. It teems with tropical fish and green sea turtles that enter the lagoon under a footbridge, providing an opportunity for snorkelers to see a variety of Hawaii’s colorful underwater denizens up close. The quieter Kohala Lagoon Pool offers a swim-up bar and a beautiful lava rock waterfall, while the Kona Pool boasts the thrilling 175-foot Kona Crater Slide. Details: hilton.com
Nature pools
The Hawaiian islands also abound with waterfalls and swimmable natural pools. In the Waimea Valley on Oahu, for example, a 1,800-acre valley features a natural pool fed by freshwater springs. It’s perfect for a refreshing dip surrounded by cascading waterfalls and tropical flora. Details: waimeavalley.net
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The 1,800-acre Waimea Valley on Oahu includes a natural pool fed by freshwater springs. (Ben Davidson Photography)
On Kauai, join a five-hour guided adventure that starts with a kayak paddle on the wide, calm Wailua River followed by a hike through the lush jungle to the remote-feeling Uluwehi waterfall for an unforgettable swim session in the pool beneath the falls. Details: kayakkauai.com
The Hawaii Foodbank Kauai received two major grants of $25,000 each on Thursday: one from Kauai HMS Host and The Journey for Good Foundation by Alvota, and one from DraftKings and FanDuel.
A team from the Kauai HMS Host and The Journey for Good Foundation by Alvota visited the Puhi facility to present a check for $25,000 in support of the work being done by the Hawaii Foodbank Kauai crew.
“The opportunity to partner with The Journey for Good Foundation by Alvota was truly a gift given to us by our local HMS Host team,” Hawaii Foodbank Kauai Assistant Director Tisha Remigio said in an email. “When this amazing group came to volunteer last month, they got to see the true, on-the-ground operations of our food bank and what it really means to keep our families fed here on Kauai.”
“We learned that the funds for The Journey for Good Foundation come from such a simple, grassroots idea — those change bins at the airport checkout stands where customers can drop their loose change,” Remigio continued. “It’s incredible how that money, which seems so small, creates such a massive impact, such as the grant award. Our local HMS Host is such a wonderful group of people, and we are so fortunate for their ongoing support, not only with this monetary grant, but with the essential grocery rescue work we do with them on a weekly basis. We truly hope this inspires others to adopt a small and simple, yet everlasting, impact idea like this to help those in need on Kauai.”
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The Hawaii Foodbank Kauai also announced, in a Thursday press release, the receipt of a $25,000 donation from DraftKings and FanDuel to directly support the purchase of an additional food delivery vehicle for the Hawaii Foodbank Kauai’s mobile food pantry program.
“DraftKings is committed to strengthening communities,” said Sabrina Macias, Senior Vice President of Global Communications and CSR at DraftKings. “We’re proud to support Hawaii Foodbank Kauai in expanding access to fresh, reliable food resources, and helping families across the island receive the nourishment they need.”
The DraftKings and FanDuel grant will also sponsor the Hawaii Foodbank Kauai’s upcoming Nourish Gala that will be held on Dec. 19 at the Royal Sonesta Kauai Resort, starting at 5 p.m.
Proceeds from the gala fundraiser will help nourish families in need across the island. Tickets and sponsorship opportunities are available by visiting the website at www.kauai.hawaiifoodbank.org, or by calling 808-482-2088.
“FanDuel is honored to support Hawaii Foodbank Kauai as part of our commitment to uplifting communities,” said Keita Young, vice president of community impact at FanDuel. “Food banks are essential pillars of local resilience, and we are proud to contribute to ensuring families across Kauai have consistent access to the food and resources they need.”
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The new vehicle will expand the Hawaii Foodbank Kauai’s ability to deliver food, including fresh produce and shelf-stable goods across the island.
“We are deeply grateful for this meaningful gift from DraftKings and FanDuel,” said Hawaii Foodbank Kauai Director Wes Perreira. “With many households on Kauai facing rising food costs, partnerships like this with DraftKings and FanDuel help ensure that none of our friends, neighbors or ohana go hungry.”
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University of Hawaii at Manoa and Lawrence Berkeley National Laboratory Teamed up To Analyze Feasibility of Geothermal Cooling Technologies
By Justin Daugherty, NLR
In areas with geologically recent volcanic activity and ample underground water flow, like the Hawaiian Islands, geothermal energy technologies present options to augment the electric grid.
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Oahu’s steep terrain and highly permeable volcanic rock enable large groundwater flow, a must for successful ground heat exchangers in Hawaii, where load is cooling dominated. Shown here is Kaena Point, the western tip of Oahu’s North Shore. Photo from Christine Doughty, Lawrence Berkeley National Laboratory.
To investigate building cooling and energy efficiency options, the University of Hawaii at Manoa’s Hawaii Groundwater and Geothermal Resources Center collaborated with scientists at Lawrence Berkeley National Laboratory through the U.S. Department of Energy’s Energy Technology Innovation Partnership Project (ETIPP).
Managed by the National Laboratory of the Rockies (NLR), formerly known as NREL, ETIPP supports remote, coastal, and island communities with technical assistance and energy planning to help them build more reliable and affordable energy systems. Communities apply for up to 24 months of technical assistance, and those communities drive the scopes and focuses of their energy projects.
University of Hawaii at Manoa joined the program in 2022 with a desire to explore geothermal options, and a new report from this project details the feasibility of developing shallow ground heat exchangers (GHEs) across Oahu and at a specific site on the island for cooling.
Geothermal heat pumps take advantage of relatively constant temperatures just under the earth’s surface, using GHEs to exchange heat with the earth. Through a system of looping pipes in the shallow ground, GHEs can move heat from a warm place to a cooler place, like how a refrigerator functions.
“High-temperature geothermal, which requires deep drilling, is required to produce electricity, but low-temperature geothermal such as GHEs, which can be accessed much nearer the ground surface, can be used for building heating and cooling, greatly lessening loads on the electric grid,” said Lawrence Berkeley National Laboratory’s Christine Doughty, staff scientist.
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“I believe both types of geothermal have potential to be an asset to Hawaii,” added Nicole Lautze, founder and director of the Hawaii Groundwater and Geothermal Resources Center.
Determining Geothermal Cooling Favorability in Hawaii
In open-loop geothermal systems, wells are drilled to extract and inject groundwater, allowing the movement of thermal heat to and from the earth. These GHEs use cooler ground water from outside the system for the cooling process and expel the warmer water afterward.
In contrast, closed-loop GHE systems continually circulate a heat-transfer solution through pipes, which transfers heat to and from the ground via thermal conduction. Groundwater needs to have temperatures that are low enough to effectively cool buildings, and groundwater flow in a GHE system works to remove built-up heat.
Hawaii has far greater needs for cooling than for heating—meaning that GHEs would add heat to the subsurface and cause the systems to not function as desired. That is where groundwater comes in: It replaces heated water from the boreholes and maintains the functionality of the GHE system. Sufficient groundwater flow, then, is essential to the considerations for GHE deployment. GHE systems may not be deployed in areas with restricted watersheds or where there is subsurface production of freshwater. Therefore, closed-loop systems may be a more reasonable option in some locations.
Left: A geographic information system map of Oahu depicts different soil permeability zones (“Ksat_Class” indicates the potential speed of groundwater flow). Right: Locations of U.S. Department of Defense lands and public and private schools—potential customers for GHE—are shown.
Numerous factors help determine whether a community or business may consider GHEs. Areas with older homes may lack efficient energy systems, and some organizations, like schools or government buildings, may prioritize more adaptive heating and cooling. Cultural considerations are also very important, and a new NLR report incorporates Hawaii communities’ perspectives on geothermal.
Economic factors are another big consideration, with the expense of deploying a system versus energy savings playing into overall cost. Modeling revealed that electricity and energy transfer demand decreased, and such reductions contributed to cost savings. Longer loan terms may help ease deployment expenses for geothermal systems.
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ETIPP researchers factored the above parameters into their analysis to develop favorability maps for closed-loop and open-loop GHE systems. They used specific geographic information system layers with 11 attributes—including elevation, geology, and soil permeability—to develop an overall favorability map for GHEs on Oahu.
For the site-specific feasibility analysis at the University of Hawaii at Manoa’s Stan Sheriff Center, researchers used a hydrogeologic model to analyze groundwater flow of a closed-loop system at the site. Restrictions on water quality—mandating that groundwater must be left in its natural state—diminished the available area for GHE system deployment across the island, while many coastal areas showed high favorability. Overlays showing potential customers and restricted areas sharpened the maps.
This closed-loop favorability map shows restricted areas where GHE development is not possible. Pixels colored dark green—the top of the color spectrum table—indicate land that is more favorable to geothermal energy.
Geothermal Cooling Potential at University of Hawaii at Manoa
From the island-wide analysis, ETIPP analysis homed in and found that the Stan Sheriff Center at the University of Hawaii at Manoa, a building with a high cooling load in an area with lots of open space surrounding it, could make a good candidate for site-specific analysis of GHE technology.
Researchers used a hydrogeologic model to analyze a potential closed-loop system at the site. They modeled groundwater and heat flow, analyzed subsurface heat flow, and completed a techno-economic analysis.
Analysis without groundwater flow showed that the GHE system may operate normally in the first year, but heat buildup would increase water temperatures significantly after that, and without groundwater to sweep heat away, there would be increased chiller demand in years two through six. Modeling that incorporated groundwater flow—with similar conditions as the Stan Sheriff Center—showed that heat would be effectively swept away from the borefield, which would enable successful GHE operation for at least 10 years. Thus, including groundwater in analysis and planning—coupled with low interest loan rates and high capital investment—may provide economic benefits to the university.
The Stan Sheriff Center (white dome in the center of the image) is located at the base of the Koolau Range. Image from Google Earth.
Cold seawater may be an option for cooling-source systems, the analysis concluded, and such a system already operates at the Natural Energy Laboratory of Hawaii. The report authors encouraged further study.
As in Hawaii, ETIPP continues to help communities explore geothermal and other technologies to help meet their energy needs through in-depth, collaborative investigation of potential solutions.
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“This ETIPP project established a strong collaboration with LBNL and the foundation for what I hope is additional grant funding to explore the potential of GHEs on the UHM campus and across the state to cool buildings and reduce load on Hawaii’s grid,” Lautze said.
The U.S. Department of Energy’s Energy Technology Innovation Partnership Project (ETIPP) is a community-led technical support program for coastal, remote, and island communities to access unique solutions and increase energy reliability. By uniting federal agencies, national laboratories, regional organizations, and community stakeholders, ETIPP provides tailored technical support to help communities achieve affordable, reliable solutions to their energy system challenges. This collaborative model leverages the combined expertise and resources of its partners to deliver comprehensive, practical solutions that align with local needs. Learn more about ETIPP.
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Comet C/2025 A6, better known as Comet Lemmon, was one of the latest icy visitors to swing through our neighborhood of the solar system, leaving astronomers and casual skywatchers equally delighted. For observers in Hawaii, the glow of the Milky Way didn’t dim the streak of light made by this comet passing through.
What is it?
Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025, when this image was taken, it had brightened to about the same apparent brightness as the planet Uranus, making it visible to the naked eye even from suburban skies.
Where is it?
This image was taken atop the volcanic peak Mauna Kea, on the Big Island of Hawaii.
Comet Lemmon could be seen with the naked eye as it streaked across the sky. (Image credit: International Gemini Observatory/NOIRLab/NSF/AURAImage processing: M. Rodriguez (International Gemini Observatory/NSF NOIRLab) & M. Zamani (NSF NOIRLab))
Why is it amazing?
Comets are notoriously unpredictable, so Comet Lemmon’s surprising visibility has felt like a bit of a cosmic bonus for Hawaiian stargazers. And this was a rare treat, as the comet won’t return to Earth’s skies for another 1,350 years, around the year 3375.
Framing this comet is the glow of our home galaxy, the Milky Way, which is easier to spot at higher elevations like Mauna Kea’s peak, where there is less light pollution. The image gives us a souvenir from a celestial visitor that won’t be back for more than a millennium.
Want to learn more?
You can learn more about comets and skywatching.
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