shallow seagrass and pylon dive under the 1908-09 Tumby Bay jetty (about 350 m long), about 50 km north of Port Lincoln. A small number of leafy seadragons remain (a local diver's count fell from about 12 to a handful), with shortsnout seahorses, nudibranchs and cobbler wobbegongs. Jetty only partly open since its May 2024 reopening; check with the District Council of Tumby Bay before diving.
Visibility at Tumby Bay Jetty
Visibility at Tumby Bay Jetty typically ranges from 3 to 10 metres, though it shifts with swell, wind and recent rainfall. Calm, settled days after a dry spell usually bring the clearest water.
Right now: approximately 9 m, 98% confidence (updated 23:38 AEDT).
View the live forecast and 7-day outlook for Tumby Bay Jetty →
Region: Eyre Peninsula, SA
Skill Level: Beginner
Depth: 0-10 m
Water Temperature: 12-22 °C
Visibility: 3-10 m
Marine Life: Leafy seadragons (few), shortsnout seahorses, nudibranchs (incl. short-tailed ceratosoma), cobbler wobbegongs, magpie perch, cowfish, blue-spotted rays, striped pyjama squid, octopus, giant cuttlefish
Hazards: Jetty only partly open since 31 May 2024: seaward end beyond the second platform barricaded (SafeWork SA); ladder/landing access unconfirmed since SafeWork SA ordered ladders removed in Feb 2024; jetty future uncertain after June 2025 hand-back; southern blue-ringed octopus recorded at the jetty
Facilities: Partial jetty access (to second platform), car park at the jetty base, no dive shop in town; hire and fills in Port Lincoln (The Dive Shop, 2/29 Jubilee Drive)