Michael McFadyen's Scuba Diving Web Site
Home · Contact Me · Sydney Reef Dive Sites · Sydney Shipwrecks · NSW Dive Sites · Australian Dive Sites · Overseas Dive Sites · Dive Accidents and Incidents · Our Yachting Adventures · 4WD Trips · Weather · Search 23 November 2017 06:51
Navigation
Home

General
About Me
My Diving
FAQ
Downloads
Web Links - Dive Clubs
St George Scuba Club
Some of my Best Photos
Contact Me

Dive Sites
Sydney Reef Dive Sites
Sydney Shipwrecks
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

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
Our Dive Boat - Mak Cat
Our 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
Our Yachting Adventures
Below is a list of links to the main pages about our yacht, Catlypso and our Our Yachting Adventures:
  • Purchase of Catlypso
  • Details about Catlypso
  • Cleaning/Repairing Catlypso
  • Our Yachting Adventures.
  • Login
    Username

    Password



    Forgotten your password?
    Request a new one here.
    Michael and Kelly's 4WD Trips
    Click here for a list of our Four Wheel Drive and Camping Trips.
    Current Kareela Weather
    A summary of the current weather conditions at our house at Kareela, Sydney, is below. Click here for more Detailed Diving Weather and Conditions. Weather from Michael McFadyen's Tempe Weather Station


    Conditions at
    23:49 on 23/1/17

     
    Temperature 25.6°C
    Humidity 65.0%
    Barometer 1003.4hPa
    Rate -0.3hPa/hr
    Wind Speed: 0 km/hr
    Wind Direction S
    Rainfall for Today 0.0mm
    Rainfall last hour 0.0 mm
    Rainfall last 24 hours 0.0 mm
    Rainfall at Start of Month 814.6 mm
    Rainfall this Year 827.0 mm
    Today's Extremes
    High Temperature 31.2°C at 15:48
    Low Temperature 20.9°C at 6:27
    Peak Wind Gust 0km/hr at 0:00
    Weather from Michael McFadyen's Kirrawee Weather Station
    Yesterday's Extremes
    High Temperature 27.5°C at 17:11
    Low Temperature 19.8°C at 6:29
    Rainfall at Start of Yesterday 827.0 mm
    Rainfall at End of Yesterday 827.0 mm
    Weather from Michael McFadyen's Tempe Weather Station
    Astronomical Data
    Sunrise 5:06
    Sunset 19:05
    Moonrise 1:09
    Moonset 15:04

    Home Brewing
    Click here for an article about Home Brewing.
    Sydney Dive Site Hints
    "The Wanderers is a great reef deeper than 40 metres"
    Eastern Apex - Raine Island
    Michael McFadyen's Scuba Diving - Eastern Apex - Raine Island, Queensland Great Detached Reef is located at the northern end of the Great Barrier Reef off Queensland, Australia. It is about 125 nautical miles (230 kilometres) from Thursday Island in the Cape York area (the pointy tip of Australia) and 75 nm (140 kilometres) from Lockhart River. The is 45 nm (85 kilometres) east-north-east from closest point of the Australian mainland, Cape Grenville. It is just over 4 nm south of Raine Island, the largest green turtle nursery in the world.

    Cape YorkCape York
    A chart showing the location of Great Detached Reef (bottom right)
    and Thursday Island (top left)
    Raine Island - Eastern Apex is shown by the coloured marker
    Northern end of Great Detached Reef below it

    There are only a couple of boats that travel to this area, one being Kalinda which routinely does full boat charters there in November and December. Another boat does some trips there and one more might go there once or twice a year.

    Kelly and I travelled here in November 2016 on Kalinda with fellow members of St George Scuba Club when we chartered the whole boat. We flew into Horn Island (next to Thursday) and started our trip from there.

    As mentioned, Raine Island is a short distance north of the Great Detached Reef which is where we did most of our diving on this trip. Raine Island "is the largest and most important green sea turtle nesting area in the world, with up to 18,000 females nesting on the small coral sand cay in one season. The turtle population can vary from a figure of less than 1,000 to more than 10,000". It is also "the longest known marine turtle rookery anywhere in the world" (quotes from Wikipedia). Despite what we were told of over 10,000 turtles a night laying eggs, it still is an extremely important location.

    Eastern Apex is located on the reef to the east of Raine Island. Its location is GPS S11Âș 43.929 E143Âș 58.530'. The island is surrounded by a reef which is quite a way from the island on this side. The top of the reef is a metre or so and it slopes gradually to about five metres before dropping quite steeply to well over 30 metres.

    The boat can anchor here just off the five metre area. The main aim of the dive is to not necessarily look for green turtles, as they are very common on the Great Detached Reef, but to see tiger sharks. The tiger sharks come here to feed on injured, dead or tired turtles.

    Raine IslandRaine Island
    One of the numerous green turtles see hereAn egg casing from a green turtle

    Once in the water we dropped to 25 metre or so and headed north and then north-east along the sloping wall. Along the way we saw plenty of silver-tipped reef sharks. We gradually ascended as we went to 15 metres where we turned around and headed back. In this area we saw two green turtles and I spotted what may (or may not) have been a large tiger shark way off up in the shallows.

    On the way back we saw an epaulette shark, a clown triggerfish, a few titan triggerfish and all the normal species. The coral on this reef was also quite nice.

    Raine IslandRaine Island
    A clown triggerfishSimon Hoad exploring one of the gullies

    Back near the boat we went up into the shallows and found that there are a number of very large gullies that run back towards the reef. These are a few metres deep and about 5 to 10 metres wide. They extend for 20 or 30 metres, perhaps some go further (you could see them from the boat).

    As the top of this reef is about five metres, it is a perfect spot to end your diving doing a long safety stop here.

    Despite (probably) not seeing any tiger sharks here, we did see one inside the Great Detached Reef, but only from above the water. Even so, that was pretty exciting.

    We dived here in November, the water temperature was about 28ÂșC, visibility about 25. A nice dive site.

    Copyright © Michael McFadyen 1990 to 2017
    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 by Michael McFadyen
    without any help from the Australian Dive Industry since 1996!