FAQs · Destination Guide
Great whites, sea lions, and wild Eyre Peninsula coastlines from a seafood capital base
Updated Jan 23, 2026 • 23 sources
Frequently Asked Questions
Quick answers sourced from research and local operating patterns.
White-shark cage diving is offered year-round from Port Lincoln, but conditions and sightings vary. Many travelers target March to June and September to November for a strong mix of wildlife potential and workable seas. Winter can bring more frequent strong-wind days and colder water, which can make the long boat run feel more intense. Some operators report a quieter period for shark activity in late July and August. If sharks are your priority, schedule your cage dive early in your itinerary and keep at least one buffer day in town.
Usually, no. Most Neptune Islands cage-dive tours are designed for non-divers as well as certified divers. Operators provide a safety briefing, fit you with a wetsuit and mask, and use a controlled cage setup with crew supervision. Breathing systems vary by operator and trip, so confirm whether it is snorkel-only, surface-supplied air, or traditional scuba. You do need to be comfortable in deep water, follow instructions quickly, and manage motion on a moving boat. If you have a medical condition, check clearance requirements before booking.
The simplest route is via Adelaide (ADL). From Adelaide you can fly to Port Lincoln (PLO) on regional airlines, then transfer about 14 km into town. Driving from Adelaide is also common and is roughly 650 km by road, so plan a full day with breaks. Some travelers like the Wallaroo to Lucky Bay Spencer Gulf ferry shortcut, but services have been temporarily suspended and there may be no scheduled sailings. Always verify current transport status and weather before committing to a tight itinerary.
The classic option is a guided sea lion swim in the Port Lincoln region, commonly around Hopkins Island in nearby marine park waters. Tours choose the best site for the day based on wind and swell, and they manage wildlife etiquette. For the best comfort, aim for January to April when water is warmer and seas are often calmer. In the water, keep your movements slow, do not chase or touch animals, and follow the briefing. Approach-distance guidance for sea lions commonly includes staying at least 30 m away as a swimmer unless a permitted operator instructs otherwise.
Expect cool-temperate water. A practical planning range is roughly 14°C in winter to around 21°C in late summer, with the warmest period often February to March and the coldest usually August to September. For snorkeling and freediving, a 5mm-7mm wetsuit is a common choice, and a hood and gloves can be worth it outside mid-summer. For cage diving, most operators supply thick wetsuits (and sometimes additional layers), but confirm inclusions and sizing before you fly. Even on warm days, wind on the boat can chill you quickly after the water session.
Yes, and they are important. The Neptune Islands are a Prohibited Area, so you cannot land without permission. The surrounding Neptune Islands Group (Ron and Valerie Taylor) Marine Park includes different zones, including sanctuary zones where fishing is not allowed. Thorny Passage Marine Park also uses marine park zoning. If you plan to fish or spearfish, remember that South Australia does not require a recreational fishing licence, but bag limits, closures, and marine park rules still apply. Use official marine park maps and PIRSA guidance to check what is allowed at your exact location before you enter the water.
It can be, with the right expectations. Many first-timers do fine on cage diving because it is designed for non-divers and runs under strict operator supervision. Guided sea lion swims are also accessible to confident swimmers with a wetsuit. Where beginners can struggle is self-guided ocean entries or boat dives in open water, where swell, wind, and cold add stress. If you are new to diving, book guided experiences, avoid surf beaches, and treat Port Lincoln as a place to do a few high-quality, operator-led sessions rather than a high-volume dive week.
Plan a land-and-food day. While others are offshore, you can visit Lincoln National Park lookouts, drive to Coffin Bay for oysters and sheltered bays, or book a seafood bay cruise from the marina. Memory Cove is a standout beach day, but access is gated and daily vehicle numbers are limited, so book ahead. In winter and spring, add whale spotting from cliff-top viewpoints. Also check whether vehicle entry fees are currently waived for coastal parks as part of seasonal programs, and confirm any park alerts before you drive into remote areas.
Three things: underestimating weather, underpacking warmth, and overplanning. Offshore trips can be cancelled by strong winds, so do not schedule your Neptune Islands day on your last day. Pack for wind and spray on the boat, not just sunshine on land. Finally, remember that highlights are spread out: day trips can be 40 km to 120 km each way, and some places (like Memory Cove) require permits or gate-key bookings. Build slack into your plan and let operators choose the safest sites for the day.
If you suspect decompression illness or a serious in-water injury, treat it as an emergency. Call 000 and give your exact location (marina, boat name, or GPS if offshore). Start oxygen if trained and available, keep the person warm, and avoid exertion. Then contact the Divers Emergency Service (DES) on 1800 088 200 for specialist advice and coordination. Port Lincoln can handle routine care, but recompression and specialist dive medicine may require transfer to Adelaide. This is why dive insurance that covers evacuation and remote operations is strongly recommended for the Neptune Islands.