Kealakekua Bay is Hawaiʻi’s largest Marine Life Conservation District, 315 protected acres where decades of no fishing show in how close the fish let you get. The clearest water is not near the parking area. It sits across the bay at Kaʻawaloa Cove, by the obelisk marking where Captain Cook was killed in 1779, reachable only by kayak, boat tour, or a steep hike in full sun.
Most people drive up to snorkel off the dock at Nāpōʻopoʻo and never make it across. If you want the good side, the real decision is how you get there. The Kona breeze chops the surface by midday, so we aim to be in the water before 10 a.m., which is when the spinner dolphins move in to rest.
Table of contents
For deeper background, the National Park Service published a 1993 history of Kona’s archaeological and historical sites that is worth a read: Kona historical sites study.
About Kealakekua Bay
Kealakekua Bay packs two designations into one mile-wide inlet: a marine life conservation district underwater, and a state historical park along the shore. The reef is among the densest on the island, the center of the bay runs deep, and a resident pod of spinner dolphins uses the bay as resting water (read more on how to behave around wild dolphins).
Kealakekua Bay sits in the middle of south Kona’s coffee country and holds some of the best snorkeling on the island. Image source: @TioLuz on instagram
Here is what each designation means for your visit:
Kealakekua Bay is a Marine Life Conservation District
There are 11 Marine Life Conservation Districts (MLCDs) in the state of Hawaiʻi (5 of which are on the Big Island), and the 315-acre Kealakekua Bay MLCD is the largest of them all.
An MLCD is a stretch of ocean with an especially abundant reef habitat, where the fish population is given special protection against human interference. This protection means that fishing and other consumptive uses are prohibited or severely limited so all aquatic life can grow and reproduce. MLCDs are home to a high density of fish species, and the fish in these districts are fairly tame, often showing little fear of humans. That is why an MLCD is such a popular destination for snorkeling, diving, and underwater photography.
If you are interested in learning more about our MLCDs you can do so on the official DLNR website.
Kealakekua Bay State Historical Park (and Nāpōʻopoʻo Beach Park)
The Kealakekua Bay State Historical Park spans the shoreline of almost all of Kealakekua Bay (except the south-eastern shoreline). The most accessible part of it is on the north-eastern edge of the bay where you can find Nāpōʻopoʻo Beach Park with a parking area, a picnic pavilion, restrooms, showers, and a water fountain. Park opening hours are from 7:00 am to 8:00 pm (daily).
The small beach in the park next to the pavilion is known as “Nāpōʻopoʻo Beach” and was stripped of its sand by hurricane Iniki back in ’92. It now consists of a collection of rocks and, while not great for hanging out, it is reasonable for a quick swim and a good place for snorkeling. Note that there is no lifeguard on duty.
Nāpōʻopoʻo Beach is a small rocky beach in the Kealakekua Bay State Historical Park. Image credit: Nnachappa64 – Own work, CC BY-SA 4.0, Link
You can also find the Hikiau Heiau in this park. This heiau is a well-preserved ancient temple dedicated to the Hawaiian god Lono, but with a dark history: it was built as a place of human sacrifice.
Read more about the state park on the official state park website.
The Captain Cook Monument
Kealakekua Bay is where Captain James Cook first set foot on Hawaiʻi Island in 1778, and where he was killed a year later, on February 14, 1779, during his third visit to the islands. The conflict that ended his life could likely have been avoided with more understanding of Hawaiian culture. There is a well-written account of those events, “the demise of Captain Cook,” on the Coffeetimes website.
Today Cook is remembered through one of the major landmarks on the south Kona coast: the 27-ft tall Captain Cook monument, a white obelisk built in 1878 at the Kaʻawaloa Flats, in the western portion of the Kealakekua Bay State Historical Park.
You cannot reach the monument by car, but it is possible to either hike to it or get there over water (by kayak or with a snorkeling tour).
The Captain Cook Monument is a 27 ft. tall white obelisk commemorating the explorer on the western shore of Kealakekua Bay
Water activities at Kealakekua Bay
Everything worth doing at Kealakekua Bay happens in the water. The bay holds coral and schools of tropical fish over a reef that drops off fast, and spinner dolphins rest here most mornings.
These are the ways to get in:
- Snorkeling
- Hiking
- Kayaking
- Boat tours
- Scuba diving
- Important note on how to behave around the wild dolphins
Kealakekua bay is a 1-mile wide bay close to the town of Captain Cook on the Big Island. The best snorkeling is on the northern (left on the picture) side of the bay. Image credit: google maps
1: Snorkeling in Kealakekua Bay
Kealakekua Bay is one of the best places in the entire state for snorkeling. Fish are plentiful and colorful, swarming over a well-developed reef that slopes steeply from the shore into deep water, so you see several kinds of reef in a short swim.
The Nāpōʻopoʻo area (at the dock, where you’ll most likely park your car) is generally shallow with little coral, but snorkeling gets better going south a few hundred feet toward the southern tip of Manini Beach Point. Encrusting coral, caves, crevices, and ledges all show up in these waters down to about 30 feet deep.
One of the many coral formations within Kealakekua Bay on the Big Island of Hawaii. Photo by Sarah Lee on Unsplash
Going north from the Nāpōʻopoʻo area (the bay’s northeastern side), the waters below the pali (cliff) are good for snorkeling during calm conditions. Abundant coral growth and marine life show up in water about 5 feet deep.
The best snorkeling spot, however, is on the opposite side of the bay from the parking area, in front of the Kaʻawaloa Flats (where the Captain Cook monument stands). There is no parking anywhere near it, so reaching the best water takes some planning.
Morning is the better time to snorkel on the east side of the bay. The afternoon Kona breeze chops up the surface by midday, cutting visibility near the Nāpōʻopoʻo entry points, so from shore you want to be in the water before 10 a.m. Kaʻawaloa Cove on the west side is more sheltered and less affected by wind chop, one more reason the boat tour option is easier to time.
There are four ways to reach the best snorkeling at Kaʻawaloa Cove. Here is how they compare:
Details below last verified June 2026.
| Name | Effort and time | Cost | Best for |
|---|---|---|---|
| 1Hike (Details ↓) | Hard. 3.8 miles round trip, 1,300 ft of climb on the way out, full sun | Free | Fit hikers on a budget |
| 2Rent a kayak (Details ↓) | Moderate; 15 to 25 minute paddle each way | $70/day | Independent paddlers |
| 3Guided kayak tour (Details ↓) | Moderate paddle; state permit included | $80 to $250 | Paddlers who want the cove without the permit hassle |
| 4Boat tour (Details ↓) | Easiest. Gear, guide, and shade included; 3 hours to half a day | From about $120 | Most visitors and families |
2: Hiking to the Captain Cook Monument (3.8 miles round trip)
The hike down into Kealakekua Bay to the Capt. Cook monument is challenging and not particularly scenic. The main reason people make it is to reach the Kaʻawaloa Flats without renting a kayak or paying for a boat tour.
The trailhead is on Nāpōʻopoʻo Road just past the Hwy 11 intersection; there is a small pull-off with space for a few cars. From there you hike 1.9 miles to the water entry point, losing 1,300 ft (400 meters) in elevation along the way.
After you are done snorkeling you have to make up that elevation again. To make matters more interesting: almost all of the trail is exposed to full sun, the surface is mostly loose lava rock and compacted dirt, and there is no cell signal for the final mile. Bring a hat, sunscreen, plenty of water, comfortable closed-toed shoes, and, of course, snorkeling gear.
If you are interested in making the hike you should have a look at the description on the BigIslandHikes website for further planning.
3: Kayaking to the monument
Kayaking from the boat landing to the statue takes between 15 and 25 minutes one way. Bring plenty of water, sunscreen, and again, don’t forget your snorkeling gear.
You are not allowed to land your kayak at the Kaʻawaloa Flats (the piece of land the Captain Cook monument stands on), which means you tie your kayaks together and let them float while you keep an eye on them and snorkel.
Whether you can step ashore depends on how you make the trip. The permitted guided tour companies have separate written approval from State Parks to land their groups at the Kaʻawaloa Flats (the piece of land the Captain Cook monument stands on). If you paddle a rental across on your own, you are not allowed to land: you tie your kayaks together and let them float while you keep an eye on them and snorkel the cove.
Kayaking permits
The local ecosystem in Kealakekua Bay is suffering under its own popularity, and the Division of State Parks now issues mandatory permits for anyone taking a vessel onto the bay, to prevent further damage to the shoreline and coral reef. You can obtain your own permit, but it is a non-trivial process that takes a few weeks (contact the State Parks office in Hilo at (808) 961-9540 for more information).
Luckily there are other options. You are not required to get your own permit when renting a kayak if the vessel already holds a valid permit for transiting the bay. That means joining a guided kayak tour or renting a permitted kayak yourself.
Guided kayak tours
Only two companies hold permits from the Division of State Parks to run guided commercial kayak tours to the Captain Cook Monument: Adventures in Paradise and Kona Boys (last verified May 2026, source). All three of their tours give you the kayak, the snorkel gear, a guide, and the permit that lets you land at Kaʻawaloa, so the real choice comes down to budget, start time, and how long you want to be on the water.
The cheapest is the Adventures in Paradise kayak and snorkel tour at about $80. It runs three hours from a 10 a.m. launch and is the pick for paddlers on a budget who are comfortable in the ocean. It asks for intermediate paddling skills and self-rescue ability, holds to an age range of 10 to 60 and a 250 lb weight limit, and is non-refundable once booked. You get water and snacks, not a meal.
Kealakekua Bay Kayak and Snorkel at the Captain Cook Monument
A state permit grants access to Kaʻawaloa Cove at the Captain Cook Monument, an area closed to self-guided kayakers. Spinner dolphins appear on more than half of tours.
from:
$80
What is a suggested tour?Our suggested tours are hand-picked tours that receive consistent good reviews, give back to the community, and work hard to minimize their impact on the environment. Read more about these tours on our website.Kona Boys runs two longer tours with more included and a friendlier cancellation policy (full refund with 48 hours’ notice). The afternoon tour is about $170 for four hours, launching around 11:30 a.m. with light snacks onshore. It suits anyone who wants a relaxed later start and accepts that the midday Kona breeze leaves the water less glassy and the dolphins less likely.
Midday Meander: Kealakekua Bay Kayak and Snorkel Tour with Kona Boys
The sleep-in, lower-priced way to reach the Captain Cook Monument. Self-guided rentals can't land at Kaʻawaloa; this guided tour does. Paddle across Kealakekua Bay, walk to the monument, and snorkel a Marine Life Conservation District.
from:
$170
What is a suggested tour?Our suggested tours are hand-picked tours that receive consistent good reviews, give back to the community, and work hard to minimize their impact on the environment. Read more about these tours on our website.The morning “Magic” tour is about $250 for the longest trip, starting at 7 a.m. when the bay is calmest and your dolphin odds are best, with a full lunch from the Coffee Shack included. It is the one for families and anyone who wants the clearest water and the full day, as long as you can drive yourself to the launch and set an early alarm.
Morning Magic Kealakekua Bay Kayak & Snorkel Tour with Kona Boys
A 7 AM start puts you at the Captain Cook monument with the clearest water and the fewest boats of the day. Self-guided rentals can't land at the monument; this guided tour can. Best odds on spinner dolphins, plus a reef holding 200-plus fish species.
from:
$250
What is a suggested tour?Our suggested tours are hand-picked tours that receive consistent good reviews, give back to the community, and work hard to minimize their impact on the environment. Read more about these tours on our website.Renting a kayak yourself
If you want to make the trip yourself you can rent a kayak online here or find vendors offering rentals on the side of Hwy 11 and along the road down to the bay (route 160). The list of permitted vendors changes often, so make sure to ask whoever you choose if they have a current commercial use permit.
Permitted kayaks are required to display the State Parks-issued decal on both bow sides. Check for this before renting.
4: Boat tours to Kealakekua Bay (snorkeling & scuba diving)
The easiest way to visit Kealakekua Bay for snorkeling or diving is as part of one of the many snorkel tours to the Captain Cook Monument.
Tour operators know the best areas in the bay to see fish and corals, and some include lunch in the price. The cruises generally run between 3 hours and half a day and provide snorkeling gear, snacks and refreshments, plus cultural, natural, and historical information about the bay.
Tour operators that follow the Sustainable Tourism Association of Hawaiʻi (more info) guidelines include Sea Paradise and Fair-Wind (both departing from Keauhou Bay). Body Glove cruises (departing from Kailua-Kona) runs dinner cruises to the bay without snorkeling.
Afternoon Sail & Snorkel at Kealakekua Bay
Sail a 50-foot catamaran to one of the best snorkeling spots on the island accessible only by boat or a two-mile kayak from Nāpōʻopoʻo. Spinner dolphins are a regular presence on the sail south, and humpback whales are sighted December through April.
from:
$125
What is a suggested tour?Our suggested tours are hand-picked tours that receive consistent good reviews, give back to the community, and work hard to minimize their impact on the environment. Read more about these tours on our website.
Boat tours are the easiest way to go snorkeling at Kealakekua bay. This is the Hoku Nui catamaran from Sea Paradise in front of Kealakekua Bay, read more about snorkeling tours to Kealakekua Bay by Sea Paradise.
5: Scuba diving
Visibility at Kealakekua Bay runs 60 to 100 feet on calm mornings, which puts it among the clearer dive sites on the Kona coast. Depths at Kaʻawaloa Cove range from 5 to 120 feet, with the most interesting coral and fish density in the 30-to-60-foot range along the cove walls.
Entry conditions matter more on the east side of the bay than the west. The stretch between the Nāpōʻopoʻo landing and Manini Beach Point is exposed to north and northwest swell. When surf is up, surge over the ledges makes conditions uncomfortable and potentially unsafe. Check conditions before getting in, and skip this entry if there’s any wave action. Kaʻawaloa Cove on the far side is more protected and stays diveable in a wider range of conditions.
Most divers reach Kaʻawaloa by boat: the same operators running snorkel tours out of Keauhou Bay also offer dive charters, and several Kailua-Kona dive shops include Kealakekua on their regular schedule. You can bring your own gear or rent from the operator.
See our scuba diving guide for current operators, pricing, and certification requirements.
6: Spinner Dolphins: NOAA Rules and Guidelines
Seeking out the spinner dolphins that rest in the bay disturbs the rest they need, even though it can look like harmless play for both sides. Approaching them interrupts behaviors they depend on.
Interactions between wild dolphins and humans are almost always bad for the animals, but there are ways to limit our impact. The most important is to respect the dolphins’ peak resting period, roughly 10 a.m. to 2 p.m.
Since 2021, NOAA federal rules prohibit approaching within 50 yards of Hawaiian spinner dolphins, by any means: boat, kayak, or swimmer. The rule applies to everyone. You can find more information at the NOAA “protect dolphins campaign”.
Read more about seeing dolphins on our website.
Getting to Kealakekua Bay
Take the Nāpōʻopoʻo turnoff onto Nāpōʻopoʻo Road, which meets Highway 11 near the 111 mile marker, about 13 miles (20 km) south of Kona. The trailhead for the hike to the monument is only a few hundred feet past this intersection, while the eastern shoreline of the bay is another 4.5 miles (7 km) down Nāpōʻopoʻo Road, at its end.
The lot at Nāpōʻopoʻo holds roughly 20 to 30 cars and fills by mid-morning on weekends. Street parking on Nāpōʻopoʻo Road is limited. Weekday mornings are the most reliable.
Kaʻawaloa Cove, the spot with the best snorkeling at the bay’s northern boundary just north of the Captain Cook monument, can be reached only by hiking in or over the water.
Nearby: coffee, a refuge, and the best sunset
Skipping the rest of the south Kona coast would be a missed opportunity. This is Kona coffee country, green and cloud-cooled, and a good base for a full-day south Kona loop.
The following are popular activities in the area:
Sunset Watching at Manini Beach
Manini Beach, halfway down the bay’s eastern shore, is one of the better sunset spots in south Kona.
The small rocky beach (no sand) sits in front of Nāpōʻopoʻo park at the end of Manini Beach Rd, 0.4 miles from the Kealakekua Bay State Park. There is a large lawn and a point that extends into the bay, with a clear view of the setting sun.
Parking is sparse here, which makes finding a spot difficult, especially in the hour before sunset.
Related: more great sunset spots!
Check out our 16 favorite sunset spots on Hawaiʻi (4 each on the Big Island, Maui, Kauaʻi, and Oʻahu) to make every sunset just a bit more special.
South Kona Road Trip
South of Kona the landscape turns green and the skies cloud over. Dry lava fields give way to forest and coffee farms, with snorkeling and diving spots, scenic pullouts, and a national park strung along the coast.
You can combine all of it (and more) into a road trip by following our 12-mile “Coffee Country” scenic drive.
The Coffee Shack overlooks Kealakekua Bay and serves great lunch and of course Kona coffee
Kona Coffee Farm Tours
Kona coffee grows on a narrow elevation band a few miles uphill from the bay. Farm tours usually run 45 minutes to an hour and are a hands-on way to learn about (and taste) the coffee.
On a Kona coffee tour you’re shown around the plantation to see the coffee growing in the field, then walked through the steps that turn a coffee cherry into a cup: drying, processing, and roasting. Many tours end with a free tasting near a showroom or visitor center where you can buy the local coffee to take home.
There are many good coffee farms close to Kealakekua Bay. See our roundup of Kona coffee farms to pick a favorite.
Kona Coffee Farm Tour at the Greenwell farm, close to Kealakekua bay. Source: here by user horspowr1001 under a CC BY-NC 2.0 license
Puʻuhonua o Hōnaunau National Historical Park
At 3.7 miles (9 minutes by car) from the Kealakekua Bay State Historical Park you can find one of our favorite places on the island to learn about Hawaiian cultural history: the Puʻuhonua o Hōnaunau National Historical Park.
Also known as the ‘place of refuge’ or ‘city of refuge,’ this park was once a safe haven for those who broke the Kapu laws, which in ancient Hawaii were punishable by death. If you reached the Puʻuhonua, you would be pardoned and given a second chance at life.
Count on at least one hour for a quick look around the park (preferably 2 or 3 hours), and another one or two hours for one of our other favorite snorkeling spots: Honaunau Bay (a.k.a. two step).
You can read more about this park on our website.
The Puʻuhonua o Honaunau National Park is one of our favorite places to see on the Big Island. Two-step, one of the island’s best shore-entry dive spots, is a 2-minute walk from the park entrance.