Kuroshima (Black Island) is not one of the uninhabited islands on the Keramas - there are a few resident mountain goats living here. On the north side of the island is Twin Rock dive site.
The "rocks" that make up this dive site are huge limestone pinnacles that shoot up from the ocean depths to just break the surface. Strong currents rip through these small islands during large monthly tidal changes - making this dive site difficult at times.
Along the walls of the twin rocks the coral is very alive. Fan corals, soft coral, and thousands of small fish abound. Out into the blue, large sea creatures such as Dogtooth Tuna, Giant Trevally, and Eagle Rays can be sighted.
Another option to this site is to dive in the shallow bay area where the coral is very beautiful. A few white tips are usually hanging around in some of the holes.
A little underwater map for the Twin Rock junkies.

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.