I love Lonsdale Wall. I love cave diving too, and the wrecks are pretty cool, but there’s something about this little stretch of brightly coloured, densely packed, huge variety of sponge life living in high velocity waters that makes for the best dives in Australia. The tidal flow in and out of Port Phillip Bay each day means there’s only a short window for diving. The top of the wall has a forest of kelp, but the underside of the underhangs is where it’s at. Between the carpet of yellow zooanthinds the sponges come in all different colours. The water absorbs colours at depth so a quick strobe flash lets me get a look at the pinks and oranges and [read more…]