A sheltered bay and Marine Life Conservation District with deep history. Hikiau Heiau stands on the Nāpōʻopoʻo shore, and across the water at Kaʻawaloa is the monument to Captain James Cook, who was killed here in 1779. To reach Kaʻawaloa, hike the historic Kaʻawaloa Trail or join a guided kayak tour with a permitted company.
Why we love it
History and some of Hawaiʻi's best snorkeling share the same water. Visit the right way, on foot or with a permitted operator, and you'll see why it's worth protecting.
What to expect
Most people arrive at Nāpōʻopoʻo, where the road meets the bay. Storm surf has replaced the old sand with boulders, and a concrete wharf rebuilt in 1912 juts out beside Hikiau Heiau on its stacked-rock platform. Across the water, the Captain Cook monument stands at Kaʻawaloa Flats. You can reach it only on foot via the historic Kaʻawaloa Trail from the uplands, or with one of the permitted guided kayak tours. The bay itself is a 315-acre Marine Life Conservation District established in 1969, split into a northern Subzone A and a southern Subzone B.
Know before you go
- Hours and fees
- The park is open daily, 7 a.m.–8 p.m., with no entrance fee.
- Kayaks
- Every kayak, paddleboard, or other vessel needs a State Parks permit to transit the bay, and permitted vessels may not land at Kaʻawaloa Flat or launch from Nāpōʻopoʻo wharf. If you rent, confirm the vessel has a valid permit. HTA advises against recreational kayaking here because of its impact on marine life.
- Facilities
- The only restrooms are in the Nāpōʻopoʻo section. The Kaʻawaloa Trail has none, so pack out all your trash.
- Marine rules
- In the conservation district, you can’t take or injure marine life (limited fishing is allowed only in Subzone B), take sand or coral, or feed fish. Anchoring is banned in Subzone A.
- Sacred site
- Hikiau Heiau is still sacred to Hawaiians, and State Parks asks visitors not to go onto it.
- Dolphins
- If spinner dolphins are in the bay, federal law prohibits swimming with them or approaching within 50 yards.
Photo: Robert Linsdell from St. Andrews, Canada via Wikimedia Commons · CC BY 2.0





