Michael McFadyen's Scuba Diving Web Site
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My Diving
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St George Scuba Club
Some of my Best Photos
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Dive Sites
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Sydney Dive Visibility, Swell and Temps
Kelly Talking on ABC Sydney about Shipwrecks
NSW Dive Sites
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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
    "Marley Point has an excellent three way swim-through"
    Yena Gap Outer Reef
    This dive is located just to the south of the entrance to Botany Bay and is one of the few decent boat dives sites in Sydney that can be safely done in strong southerly or even south-easterly winds.

    Once past The Leap, turn south a follow the coastline for about one kilometre to GPS point xxx (to come). Note that this uses AUS66 as a map datum (if you do not understand datums, click on the GPS Page from the menu at left).

    This location is just off the Yena Gap Picnic Area in the Captain Cooks Landing Place section of Botany Bay National Park. It is too far out to do from the shore.

    To locate the dive site, go to the GPS co-ordinate and run in towards the shore. The dept will come up from 22 metres or so to 15 metres and then back to 22 and back up to 18 metres. When you are on the first rise, drop anchor (depending on the wind).

    This site consists of a rocky reef which has a sand finger/gutter extending up a section for at least 100 metres. This creates a sort of rock island. You should be anchored near the southern end of the "island" and the head of the sand gutter.

    The reef at Yena GapThe reef at Yena Gap
    A starfish on the reef at Yena Gap Outer ReefAnother shot of the reef

    Once on the bottom, head to the east and you should find yourself drop over a small wall to about 23 metres on a sandy bottom interspersed with small boulders and lots of kelp. The reef should have a bit of kelp on it. Follow the wall either south or north for a while. There are some small overhangs and some nice sponges and sea squirts.

    After about 7 minutes return back past where you first joined the wall and explore the northern section for about another 7 minutes. For a first dive here, you should return back to the anchor area but once you know the area a bit better, you could head west over the the top of the reef and come back up the gutter to the anchor. Leave that option for a later dive once you have been here a few times.

    Once back at the anchor, head to the west till you come to the sandy gutter. You can follow the western side (on your left) towards the north for a while. The wall here is less prominent and there are no overhangs but some small cracks and larger boulders. There is a bit more kelp here and less sponges, but still quite a few sea squirts.

    Yellow nudis at Yena GapA couple of biscuit stars at Yena Gap
    Two yellow nudis mating Yena Gap Outer ReefA couple of biscuit stars at Yena Gap Outer Reef

    After another five minutes, head across the sand to the east and within a minute you should hit the reef again. Follow this to the south and within five minutes you will be back at the anchoring area. Finish off the dive here.

    A nice dive, but not an outstanding one, that is worth doing if the winds and seas make your preferred dive site out of bounds.

    Note that as this site is close to the entrance to Botany Bay, it should be affected by dirty water at low tides and after rain so it is probably better on an incoming tide. However, I have dived here after 50 mm of rain at low tide and still had in excess of 15 metres visibility.

    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!