Bypass reef is located just off Cape Banks on the north head of Botany Bay.  It is rumoured it is named for one of two reasons, the first being that most dive boats bypass this site as the head north out of Botany Bay.  The second explanation is the John D, a club member had recently had a bypass when he and others discovered this reef.  When we got there the wind was quite strong but we were already anchored.  The other boats decided to dive a more protected site.

This is deeper than most reefs.  The sand line is around 30m deep making it an ideal nitrox dive.  We were anchored on what appeared to be the east side of the reef.  Where we were there was a wall around 4m high, a number of rock features that you could swim in between and a small cave that you could just get into.  The viz was 12-15m and the water 20 degrees.  Amongst the rocks we found 3 devilfish in total, an octopus, cuttles and lots of the more common fish varieties.  We didn't explore too far from the anchor - the site was unfamiliar and were were deep enough to get into deco quite quickly, even on 36%.  We headed a bit south from our anchor and the reef seemed to be cutting around to the west with smaller rock formations on the east.  To the north the reef kept on going. 

Well worth many more dives this is a really nice dive site that I wish we had known about earlier.