Michael McFadyen's Scuba Diving Web Site
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About Me
My Diving
Web Links - Dive Clubs
St George Scuba Club
Some of my Best Photos
Contact Me

Dive Sites
Sydney Reef Dive Sites
Sydney Shipwrecks
Sydney Dive Visibility, Swell and Temps
Kelly Talking on ABC Sydney about Shipwrecks
NSW Dive Sites
Sydney Shipwreck Summary
NSW Shipwreck GPS/Marks
Australian Dive Sites
Overseas Dive Sites
Aircraft I have Dived
Old Bottles
Free Shipwreck Books

Dive Related Equipment
Shearwater Predator and Heinrichs Weikamp OSTC 2N
Uwatec Aladin Dive Computers
Apollo AV1 Underwater Scooter
Bauer Compressor
DIY Oxygen Stick - Nitrox
GoPro HD Hero Video Camera
My Camera Setup
Purchase of New Dive Boat
My Dive Boat - Mak Cat
My Old Dive Boat - Le Scat
My Dive Gear
GPS and Diving
Make Your Own Car Tank Rack

Marine Life
Rarer Sydney Marine Life
Bare Island Pygmy Pipe Horses
Bare Island Sea Horses
Bare Island Nudibranchs
Bare Island Marine Life
Encounter with Southern Right Whale and Calf

Other Dive Info
How Weather Affects Diving in Sydney
Visibility and Wave Averages in Sydney
Waves and Diving
Diving Weather and Sea Conditions
Tide Tables
Dive Accidents and Incidents
Dive Book Reviews
Site Map
Noel Hitchins 1951-2005
Lloyd Bridges - Mike Nelson in Sea Hunt
My Yachting Adventures
Below is a list of links to the main pages about my yacht, Catlypso and My Yachting Adventures:
  • Purchase of Catlypso
  • Details about Catlypso
  • Cleaning/Repairing Catlypso
  • My Yachting Adventures.
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    Michael's 4WD Trips
    Click here for a list of my Four Wheel Drive and Camping Trips.
    Home Brewing
    Click here for an article about Home Brewing.
    Sydney Dive Site Hints
    "There are two dive sites at Middle Ground, both are fantastic"
    Seven Heaven
    This dive site is located at the southern end of Ribbon Reef No 7, just inside the channel between the reef and a smaller reef. This is 144 kilmotres almost due north of Port Douglas. The GPS Reading for the location is S15° 12' 20.0" E145° 43' 30.6" using WGS84 as datum. The site consists of a large coral bommie that comes up from 30 plus metres to 3 metres. The bommie drops vertically from 3 metres on the top to 12 metres on northern and eastern sides and 17 metres on the western side. The sand slopes from the bottom of bommie to over 30 metres. The top of the bommie is about 30 metres E-W and 40 metres N-S. There is a mooring on top of the reef.

    Seven HeavenSeven Heaven
    Kelly McFadyen swims along the wall at Seven Heaven

    Drop to bottom about 25 metres and start circling the bommie. There are lots of small coral bommies, about one to two metrs across and a metre high. THese bommies have lots of live corals, sponges and some other species. As you go, come up a few metres every quarter turn. Zig-zag as you go, from bommie to bommie. On the northern or souhtern sides (where you may encounter some currents), look out for pelagic species. There are many types to see, ranging from tunas to trevallies to xxxx.

    You can get some good photos of coral and the bommie in the background. As you get closer to the base of the bommie, you will also see some small overhangs, especially on the northern side. As you start up the verical walls of the bommie, look for gorgonias and .soft corals that will make good photographs.

    Seven HeavenSeven Heaven
    A nudibranch at Seven HeavenA clownfish at Seven Heaven

    Towards the top of the walls there are a couple of cracks that lead to the bowl in the centre. There is also a smaller bommie off the (eastern?) side. Along the top edge and in the cracks there are some excellent gorgonias and soft corals and sea whips. These are very photogenic. Inside the bowl the depth is only about 3 to 4 metres. The coral life here is fantastic. All sorts of corals can be seen and there are lots of anemones, clownfish and other small fish. You will see lots of things and can spend a long time in this area.

    Fish to be seen here (as well as the pelagics), titan triggerfish, unicornfish, large tuna, flutemouth, double-humped parrotfish and more.

    Visibility here is normally good, from 20 to 30 metres on average. Temperature is about 25C in November.

    Return to Main Great Barrier Reef Index Page.

    Copyright © Michael McFadyen 1990 to 2024
    Non-commercial use of an article or photograph is permitted with appropriate URL reference to this site.
    Dive shops, dive operators, publications and government departments cannot use anything without first seeking and receiving approval from Michael McFadyen.
    This web site has been wholly thought up, designed, constructed and funded for almost 30 years by Michael McFadyen without any help from the Australian Dive Industry.
    Website created 1996!