Inner ReefIf you’re a beginner at snorkeling, then you should stay close to shore and follow the inner reef. The inner reef may not be as fun as the outer reef, but it does have lots of caverns, channels and tunnels.
Outer ReefOnly experienced snorkelers should swim to the outer reef and even that depends on the water conditions. The outer reef is by far the most interesting. In some places it has a steep drop-off of about 50-70 feet with an abundance of sea life. Past the outer reef the surf kicks up, making Tunnels popular with both surfers and kite boarders.
Take Highway 560 west of Princeville past Hanalei (1.1 miles) toward Ha’ena. Two short dirt roads, just past Mile Marker #8, lead to the parking area for the beach.
There is virtually no parking besides a couple of turn-offs in between the beach houses. However, it’s usually better to drive up to the Haena Beach parking area and walk the quarter mile down the shore to Tunnels.
Be sure not to park on the highway or you’ll be ticketed. If you arrive early enough some parking may be available just past the 8 mile marker. You will see two dirt roads. Parking is legal on all country roads. Look for the first road at about 0.4 miles past the 8 mile marker and the second road at nearly 0.6 miles past the marker.