Port Broughton is a fishing and holiday town on the eastern shore of upper Spencer Gulf, best known for blue swimmer crabs and its long foreshore. Its jetty is included because the regional brief names it, but it is not a recognised scuba site: there is no SDFSA or dive-shop listing, and the surrounding water is very shallow over sand and seagrass flats. At high tide the jetty offers a pleasant snorkel.

Blue swimmer crabs are the headline animal – the town is one of the state's crabbing capitals – and the seagrass shelters juvenile whiting, garfish, tommy ruff, small flathead and stingarees. Dolphins are regularly seen in the bay. The piles carry algae and small encrusting growth with crabs and shrimps.

Upper Spencer Gulf is warmer in summer than the southern gulfs, with water in the mid-20s, and colder in winter. Visibility is generally low, a few metres at best, and deteriorates quickly in westerly winds. For scuba divers, Port Broughton offers little; the nearest quality diving in upper Spencer Gulf is around Whyalla and Point Lowly across the gulf.

From Adelaide drive about 170 km (2 hours) north via Port Wakefield and the Augusta Highway, turning west at the Port Broughton turn-off. The jetty is on the foreshore in the town centre beside the swimming enclosure. Park on the foreshore and walk out along the jetty; enter via the steps at high tide, as the surrounding flats are very shallow.

Port Broughton faces west across upper Spencer Gulf onto broad shallow flats. Westerly winds make the water choppy and turbid; easterlies blow offshore and give calmer, clearer conditions. Tides in the upper gulf are larger than further south and the flats drain extensively, so time any snorkel for high water.

Summer is the pleasant season; winter water drops to about 11-13°C.

Snorkel along the jetty at high tide, looking over the piles and seagrass for crabs and small fish.

No operator; not a listed dive site. Occasionally snorkelled by visitors.