Grange Jetty is a heritage timber jetty on Adelaide's northern beaches, close to the Grange Hotel and the historic Esplanade terraces. The Grange-Henley coast is a gently sloping sandy shore with seagrass further offshore, and the jetty extends over shallow sand. Divers can expect a shallow, sandy dive among the piles with modest growth of algae and invertebrates, small fish, crabs, and possibly cuttlefish, octopus and rays at night.

Offshore, the Grange Tyre Reef, laid by the Fisheries Department in the late 1970s, lies about 4 km out and is a far more interesting dive for those with a boat. As with the other northern metro jetties, visibility is often poor after westerly winds or rain, and the jetty is well used by anglers and swimmers. That makes Grange a calm-morning snorkel or an exploratory local night dive rather than a destination.

For divers living nearby it offers the convenience of a jetty within minutes of home, and a chance to record species on an under-surveyed structure; reports can be shared with the Scuba Divers Federation of SA or the Marine Life Society of SA, which maintain local site information. Anyone diving here should stay clear of lines and carry a torch and surface marker. The Grange Hotel and nearby cafes make a pleasant post-dive stop, and the walk along the Esplanade to Henley Square is a local favourite.

Grange is about 20 minutes west of the Adelaide CBD. Park on the Esplanade near the Grange Hotel or in side streets. Enter from the beach beside the jetty and snorkel out along the piles; there are no documented diver stairs.

Gear up at the car and walk across the sand; the carry is short. Swim out on the surface with a torch and surface marker buoy, and stay beside or under the jetty rather than out in the swimming area. Entry and exit through small shore-break waves is easiest at mid to high tide.

These northern metro jetties sit on a shallow, sandy, west-facing coast. They are only worth diving in flat conditions after several days of easterly (offshore) winds; any westerly or south-westerly wind or swell stirs up the sand and turns the water milky, and the summer sea breeze usually arrives by early afternoon. The tidal range is small, but low tide leaves little water under the inshore half.

Visibility falls sharply after rain because of stormwater and river outflow along the coast. Night dives on calm evenings give the best chance of cephalopods.

Enter from the beach beside the jetty, snorkel out to the deeper outer half, then descend and work slowly along the piles with a torch, keeping well clear of fishing lines. Return along the other side and exit on the beach.

No dive operator uses this jetty; nearest shops for fills and advice are in Glenelg (Adelaide Scuba, The Dive Shack) and Edwardstown (Underwater Sports).