Vivonne Bay Jetty

Vivonne Bay is the south coast's one jetty, and it is the only platform on Kangaroo Island where the gulf closures do not reach. The fishing-zone boundary follows the island's north coastline, so the whole south coast sits in what the rules call all other waters — calamari open, garfish open, snapper open, and full bag limits instead of the halved ones the north coast carries. The jetty itself has the best history of any structure on the island: built in 1911 at 302 metres into 4.1 metres of water, the longest on Kangaroo Island at the time, it had an 18-metre gap deliberately removed during the Second World War so an invading fleet could not use it. The outer end was demolished in 1958, the shore end restored in 1964, and by 2010 it stood at 128 metres, 3 metres wide for the first 78 and then 1.7 metres, with a rail track for the commercial cray boats. Today's deck measures somewhere between 130 and 150 metres, depending on which survey you believe. Cray boats still work off it, and it has one famous session that three separate guides describe in almost the same words.

That session is huge tommies at night. Fish a float and small baits off the deck after dark and you have the trip most people drive 64 km from Kingscote for. The second draw is seasonal and specific — big trevally in winter, alongside whiting, calamari and garfish, which is a reasonable reward for standing on a south-coast jetty in July. The beach is a separate fishery and arguably the better one: the stretch beside the Harriet River mouth and east of it holds salmon, mullet, tommies, flathead, school sharks and bream to nearly a kilogram, which is remarkable water for a surf beach. Both the Harriet and the Eleanor hold bream, and the standing local advice is that undersize fish will eat every traditional bait you put in, so switch to lures if you want the better ones. The Harriet estuary is shallow, with the river-mouth channel running out through seagrass flats, and the state of the mouth governs the bream fishing more than the tide does. Point Ellen, the rocks at the western end, gives sweep, salmon, trevally, tommies and leatherjackets to anyone who treats the swell with respect.

Tommy ruff are the headline and they run big here after dark, with no minimum size and a bag of 40. Trevally are 24 cm with a bag of 20 in these waters, and the winter fish are the ones worth targeting. King George whiting are 32 cm with a bag of 10 and a boat limit of 30, double the north coast's allowance. Southern calamari is open here at 15 per person and 45 per boat with no size limit, combined with cuttlefish, and garfish is open at 23 cm with a bag of 30. Australian salmon run two-tier statewide, 20 fish between 21 and 35 cm or 10 over 35 cm, mullet are 21 cm with a bag of 60, bream 30 cm and 10, flathead 30 cm and 10, and sweep 24 cm and 20. Snapper is legal on this coast and nowhere else on the island, at 38 cm with a bag of 5 and a boat limit of 15, and every snapper kept has to be reported through the free SA Fishing app. There is a trap attached: you may not transit a closed zone with snapper aboard, so a fish taken here cannot be landed at the Penneshaw ramp. The crayfish this jetty exists to service are a commercial fishery, and Kangaroo Island sits in the northern rock lobster zone, where the recreational season is shut from 6 pm on 31 May to noon on 1 November rather than the southern zone's 1 October.

Swell decides everything on this coast, not wind and not tide. A northerly or north-easterly blows offshore and is what you want; anything with south in it puts the Southern Ocean into the bay. Bring your own light, because the headline fishery is a night one and nothing about jetty lighting here is documented. Watch the deck — the outer section was 1.7 metres wide when it was last recorded, which is a tight platform to share with a rail track, a headlamp and a swell. Anyone walking east along the coast should know the Seal Bay Sanctuary Zone starts 5.9 km east with no habitat-protection buffer in front of it, and the Seal Bay restricted access zone, where entry itself is prohibited, is about 9 km east. And do not improvise a launch: there is no public boat ramp at Vivonne Bay, only a rough site that depends entirely on the weather.

Sealed access from South Coast Road, then Jetty Road runs down to the deck on an unsealed track, 64 km by road from Kingscote and a genuine drive on this island. Picnic and barbecue areas and picnic shelters sit at the jetty itself and are open to the public. The Vivonne Bay Campground, run by Kangaroo Island Council, sits along the Harriet River a short walk from the beach, with picnic shelters, barbecues, a small playground and bathrooms with paid hot showers, which is a well-serviced base by Kangaroo Island standards. There is no public boat ramp, only a rough weather-dependent launch site. The jetty's outer section was recorded at 1.7 metres wide, with no documented handrails, lighting or accessibility statement, so it is a poor bet for wheelchairs and a judgement call with small children at night. Southern Freedom Charters run offshore trips out of Vivonne Bay in April and May for anyone wanting the reefs beyond the bay. Fishing is free, and no general recreational fishing licence exists in South Australia.

Vivonne Bay faces south-south-west straight into the Southern Ocean, so northerly and north-easterly winds blow offshore and give the settled conditions the night session needs. Anything with south in it puts swell into the bay, and swell rather than wind is usually the deciding factor because it arrives from thousands of kilometres of open water regardless of the local forecast. Kangaroo Island's tidal range is small, and on this coast the surf and swell state matters far more than tide height. The one exception is the Harriet River mouth, where the estuary channel and whether the mouth is open or closed govern the bream fishing. The night tommy session and the winter trevally both want a settled forecast rather than a particular tide. Calling this the sheltered option on the south coast is accurate and not much of a compliment.

This is the Southern Ocean and it does not care what the local forecast says. Point Ellen and the rock platforms at the western end require extreme care when a big swell is running, and two independent guides say so separately, which is unusual enough to take seriously. The jetty's outer section was 1.7 metres wide when last recorded, and narrow decking, wind, darkness and a working rail track are a combination that deserves slow feet. There is no public boat ramp here, only a rough weather-dependent launch site, and improvising a launch on this coast is how days go wrong. Sharks off the beach at night are part of the fishery rather than an emergency, but know what is on the end before you drag it up the sand. The jetty is a working commercial cray platform, so keep clear of gear, ropes and boats coming alongside.

Huge tommy ruff at night are what it is famous for, with big trevally in winter alongside King George whiting, calamari and garfish. The beach beside the Harriet River mouth adds salmon, mullet, flathead, school sharks and bream to nearly a kilogram, and Point Ellen at the western end gives sweep, salmon and trevally off the rocks.

Yes, and this is the only Kangaroo Island platform where you can. The fishing-zone boundary follows the island's north coastline, so the south coast is outside the Gulf St Vincent and Kangaroo Island zone where calamari and garfish have been closed since 1 May 2026. Here calamari is open at 15 per person with no size limit, and garfish at 23 cm with a bag of 30.

Yes. The island's south coast sits inside the South East snapper fishery area, so snapper is open at 38 cm with a bag of 5 and a boat limit of 15 while the rest of the state is closed until at least 30 June 2027. Every snapper kept must be reported through the free SA Fishing app, and you cannot carry it back across the closed zone, so landing it at Penneshaw is not legal.

No. There is a rough launch site that depends entirely on the weather and nothing more. The nearest proper facilities are on the north coast, and this is not a coast to improvise a launch on.

The Seal Bay Sanctuary Zone begins 5.9 km east of the jetty, with no habitat-protection buffer in front of it, so the no-take water starts exactly at the park line. The Seal Bay restricted access zone, where entry itself is prohibited, is about 9 km east. Vivonne Bay itself is outside the marine park, and the fishing is legal right up to that line.