
"Nagannu" in Okinawan means long - like the shape of this uninhabited island. As you can see from the picture, the lagoon surrounding this island is very large - making this a great location for banana boat rides, wakeboarding, parasailing, and other marine sports. During the summer months, many visitors get ferried out to Nagannu for fun in the sun.
As for the diving, once outside the lagoon this island drops off drastically to depth of 60 meters/190 feet. Mild currents are common, allowing for great drift diving. It is very common to see green sea turtles and large schools of blue fusillers swimming on the edge of the dropoff.
Check the map - the lagoon is massive for such a (comparatively) small island. Sorry, only Japanese descriptions. Depths in meters.

Let's dive the Dream Hole!!
Monthly Onna Boat Trips
3 dives - $130
[Every second Saturday]
June 14th (Sat)
July 12th (Sat)
August 9th (Sat)
September 13th (Sat)

Let's check out the spectacular landscapes in the Onna area. Manza Dream Hole, Zampa (Bolo Point), Hoshu, Tancha, Apogama, and Onna Point...
There are countless beautiful sites with caves, holes, and a diversity of sea animals in that area.
This summer, in addition to our regular Kerama trips, we started this monthly special. With our boat, the access to all those sites becomes easy, and you can drift dive there too!
The seats are limited (up to 13), so hurry up and book your seat!
Details:
Full day boat trip with a lunch break on the land.
Rental equipments are available ($30).
Additional equipments suggested: lights & SMB
8:30 Meet at Maeganeku Port.
(near Moon Beach Hotel & McDonalds')
9:00 Departure
1st - Zampa
2nd - Hoshu or Onna Point
13:00 Lunch break on land
3rd - Manza Dream Hole
*Selection and the order of the dive sites can vary depending on the weather.