Arch Rock is part of the Nine Pin Point Marine Reserve, a system of reefs that stretches about 100 meters from the shore into the Huon River.
Tannic acid from the Huon River reduces light levels and seems to encourage deep water species to move into the shallows. Bearded Rod Cod, Weedfish, Pipefish and Leatherjackets are common.
Near Arch rock there is a flat rock shelf that supports a rich weed garden, and the bottom drops away about 40 m from the rock onto a series of small ridges in 10-14m.
The island is home to plenty of Butterfly Perch, Leatherjackets, Wrasse and Rock Cod – a very easy and relaxing dive.
Butts Reef is an extensive area of reef that lies in the middle of the mouth of the Huon River just south of Charlotte Cove.
The reef comes up to around 5-8 m and the flat reef top spreads over an area around the size of a football field. The top of the reef offers a shallow weed garden with a few small bommies. The weed garden has some species of delicate brown algae, but tends to be dominated by cray weed and strapweed. On the sheltered northern side it slopes away slowly into a thick weed garden in ten metres. The western and southern sides drop away sharply onto silt and sand in 13-15m. The slope on the southern side is perhaps the most attractive area.
Meeting at the Olinda Grove dive shed 7am.
| Dive Coordinator | George Parremore |
| Dive Qualification Required | Open Water |
| Meeting Location | Olinda Grove Dive Sheds |
| Dive Cost | 60 + Tanks |
| Day or Night Dive | Day Dive |
| Number of Dives | 2 |
Refunds
Refunds are at the Dive Coordinator's discretion however the following guidelines apply to normal events:
Cancellation where a replacement diver is found: 100% refund
No show or cancellation with less than 48 Hours notice: 0% refund
Cancellation with greater than 48 Hours but less than a week's notice: 50% refund
Cancellation with greater than a week's notice: 100% refund