Fishery Bay Reef

Fishery Bay Reef Dive Site Guide | Eyre Peninsula

By ScubaDownUnder Team · 2026-04-25

Fishery Bay is a small, sheltered indentation on the southern Eyre Peninsula coast where the topography provides just enough protection from the prevailing Southern Ocean swell to make shore diving consistently accessible. The reef inside the bay benefits from the clear water that the peninsula's southern position produces, visibility here is noticeably better than the gulf sites to the north and east, and the sea dragon population in the kelp and seagrass reflects the undisturbed, productive character of a site that does not attract heavy diver traffic. For divers willing to manage the rocky shore entry, it delivers some of the more rewarding temperate reef diving on the lower Eyre Peninsula.

The bay sits on the southern shore of the peninsula within or adjacent to the Lincoln National Park boundary, and access reflects that setting. It requires some navigational knowledge of the coastal tracks to reach, and there are no formal dive facilities at the site, no air fills, no shop, no signposted entry, and limited mobile reception. What the site offers in exchange is a reef system in good health, water clarity that the more accessible peninsula sites cannot match, and the combination of leafy and weedy sea dragons in the kelp zone that makes this section of the Eyre Peninsula coast one of the most reliable in South Australia for both species.

The reef descends from the rocky shore in 5–8 metres of water at the top of the slope to 18–20 metres at the base, with a kelp-dominated upper section and more open sponge-encrusted rock in the deeper areas. The transition zone between the kelp forest and the open reef is where most of the interesting marine life concentrates, sea dragons at the kelp margins, Port Jackson sharks in the deeper gutters and crevices, and cuttlefish working the boundary between the structure and the sand. The kelp itself is the giant kelp and bull kelp mix typical of the cooler southern Australian coast, and the canopy in places is thick enough to require navigation around rather than through.

The headline encounters are the sea dragons. Both leafy (*Phycodurus eques*) and weedy (*Phyllopteryx taeniolatus*) sea dragons are resident at Fishery Bay, with the leafies favouring the more sheltered kelp pockets and the weedies more associated with the seagrass-and-rock interface. Both species are slow movers and tolerate close observation by neutrally buoyant divers; both are also extremely well camouflaged and are most often spotted by divers who have learned to look for their drifting silhouette against the kelp rather than for the animal itself. The Eyre Peninsula population is stable and the sightings rate at Fishery Bay across the typical dive is among the best in SA.

The supporting cast is the temperate reef community of the southern Australian coast, dusky morwong, magpie morwong, harlequin fish, blue-throated wrasse, southern blue devils in the deeper crevices, and the encrusting sponge, ascidian and bryozoan community across the rock surfaces. Wobbegong sharks rest on the deeper ledges through the warmer months, and Port Jackson sharks aggregate in the gutters during their breeding season from May through August. Schools of bullseyes and old wives shelter under the larger overhangs.

Visibility in the bay on a settled day can reach 20–25 metres, driven by the clear Southern Ocean water that washes the peninsula's exposed southern coast. In any swell, the entry across the reef rock becomes difficult and the visibility in the shallows drops as wave action stirs the bottom, Fishery Bay is unforgiving in adverse conditions, and the safe-window calculation is the part of the dive that demands the most attention. Water temperature ranges from 14°C in winter to 21°C in February, with a 5mm wetsuit minimum and a 7mm preferred for the cooler half of the year.

For repeat divers cycling through the lower Eyre Peninsula sites, Fishery Bay sits in the upper tier, more demanding to access than the township jetties, more rewarding biologically than the sheltered gulf reefs, and one of the few places where both sea dragon species can be reasonably expected on a single dive.

## Site Access and Logistics

Fishery Bay is on the southern Eyre Peninsula, accessed from Port Lincoln (approximately 30km) via Lincoln National Park or coastal tracks. Local operator knowledge is valuable for first-time visitors, the access tracks are not signposted as dive sites, and the Lincoln NP routing changes seasonally. Park entry fees apply within Lincoln National Park.

Open Water certification is appropriate for the depth, but rocky shore entry experience is genuinely required, neoprene boots, a careful timed entry between swell sets, and a fin-on-in-water approach are all standard. A 5mm wetsuit minimum, 7mm in winter. Plan tank fills from Port Lincoln before heading south. The site combines well with [Cape Donington](https://www.scubadownunder.com/dive-sites/cape-donington) and Memory Cove for a productive Lincoln NP day.

Local operator: [Calypso Star Charters](https://www.calypsostar.com.au) at Port Lincoln runs day trips to Eyre Peninsula southern coast sites and is the practical contact for organised access. The company also runs the well-known shark cage diving operation, but their general dive charters cover the Lincoln NP coast on demand.

## Sources

- Calypso Star Charters: [https://www.calypsostar.com.au](https://www.calypsostar.com.au) - Department for Environment and Water SA, Lincoln National Park - Atlas of Living Australia, Leafy sea dragon (*Phycodurus eques*) distribution - Marine Life Society of South Australia, Eyre Peninsula southern coast site notes - Michael McFadyen's Scuba Diving, Lincoln NP and southern Eyre profiles