Port Lincoln & Neptune Islands

Port Lincoln is Australia’s only permitted base for white-shark cage diving, operating at the Neptune Islands 60–70km offshore. Most day tours use a surface cage supplied by the boat, so scuba certification is not required.

Best time
Apr–Oct
Certification
Open water
Budget
$–$$$ · under $2,000 to over $4,000
Trip length
1–5 days
Trip style
Day trip, Liveaboard, Land based
Access
Moderate

The short version

Known forOnly permitted white-shark cage-diving location in Australia.

Main tradeoffShark sightings are not guaranteed.

Port Lincoln & Neptune Islands dive region

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Which months could work?

Conditions referenceSeason, water and visibilityBest Apr–Oct · Moderate current · 13–20°C (coldest Jul, warmest Jan)
Best months Operating
Current
Moderate
Water temperature
13–20°C (coldest Jul, warmest Jan)
Visibility
8–25m: Open-ocean visibility varies and berley can reduce clarity near the cage.
Experience
Surface cages normally require no certification and use supplied air.

01 · Marine life

What you may see

rareoccasionalcommonly seenpeak seasondestination closed

Sightings are never guaranteed. The bars show typical likelihood by month.

Great white sharkCarcharodon carcharias
Scuba diving
Sighting likelihood by month
MonthLikelihood
Januaryoccasional
Februaryoccasional
Marchoccasional
Apriloccasional
Mayoccasional
Juneoccasional
Julyoccasional
Augustoccasional
Septemberoccasional
Octoberoccasional
Novemberoccasional
Decemberoccasional

Possible year-round; no synthetic monthly peak is claimed.

Australian sea lionNeophoca cinerea
Scuba diving
Sighting likelihood by month
MonthLikelihood
Januaryoccasional
Februaryoccasional
Marchoccasional
Apriloccasional
Mayoccasional
Juneoccasional
Julyoccasional
Augustoccasional
Septemberoccasional
Octoberoccasional
Novemberoccasional
Decemberoccasional

Seasonality is coded conservatively.

Common dolphinDelphinus delphis
Scuba diving
Sighting likelihood by month
MonthLikelihood
Januaryoccasional
Februaryoccasional
Marchoccasional
Apriloccasional
Mayoccasional
Juneoccasional
Julyoccasional
Augustoccasional
Septemberoccasional
Octoberoccasional
Novemberoccasional
Decemberoccasional

Possible in the region; no unsupported monthly peak is applied.

Bottlenose dolphinTursiops truncatus
Scuba diving
Sighting likelihood by month
MonthLikelihood
Januaryoccasional
Februaryoccasional
Marchoccasional
Apriloccasional
Mayoccasional
Juneoccasional
Julyoccasional
Augustoccasional
Septemberoccasional
Octoberoccasional
Novemberoccasional
Decemberoccasional

Possible in the region; no unsupported monthly peak is applied.

See all 8 species

02 · Dive sites

Dive sites worth knowing

A starting point, not a ranking. Conditions decide what works on the day.

See all 4 dive sites
03 · LogisticsGetting there and costsModerate. Fly to PLO. Typical trip $–$$$.

Route overview

Moderate

Reachable but with some friction: 1 domestic flight, a 3h boat crossing.

Airport options

PLO

Port Lincoln Airport

About 15 minutes by road to Port Lincoln after an onward domestic flight

Typical trip cost

$–$$$

under $2,000 to over $4,000

Per person, excluding international flights.

  • Surface-cage day tours are about AUD 630 including a AUD 45.
  • 40 visitor-use fee.
  • Multi-day ocean-floor cage expeditions start around AUD 2,995.

Sources & last checked

Checked September 2026

Research is source-backed, but conditions and fees should still be confirmed locally.

View 3 sources and checking notes

Note on the data: This is primarily a wildlife-tourism product, not free-swimming scuba. Month-level shark odds are deliberately flat because presence changes between years. Water temperature: Rounded offshore seasonal bands; cage depth and wind chill affect exposure. Access: Most international itineraries connect through Adelaide, then fly to Port Lincoln before the long offshore crossing.