Seawolves Cove is one of the lesser-known Marion Bay sites listed by the Marine Life Society of South Australia. The Society describes it as a cove with diverse fish life, caves and swim-throughs in 10-12 m, and it singles out one resident in particular: blue groper that are tame enough to be hand-fed (a practice now discouraged). The cove's walls and cave roofs are decorated with soft corals, gorgonian fans and sponges, and the fish life includes southern blue devils, bullseyes, nannygai and sweep alongside the groper.

The limestone of the Innes coast erodes into overhangs and tunnels, and the combination of shelter and invertebrate colour makes this kind of cove one of the most rewarding dive types in the area. Beyond that description, documentation is thin. There is no published position, no mooring and no regular operator, so divers need local knowledge to find it.

The Society stresses that it is only dived in good weather with low swells, since surge in caves on this coast can be dangerous. Divers interested in it should ask Adelaide shops that run Innes trips or local divers in Marion Bay for directions. If you do find it, record the position and share it with the Marine Life Society or SDFSA so the site can be documented properly; many of the older Innes sites were recorded in the 1980s and 1990s and have since dropped out of common knowledge.

Resist the temptation to feed the groper: habituated fish become vulnerable to spearfishers, and feeding changes their behaviour. A torch will bring out the colour of the soft corals and fans inside the caves.

From Adelaide drive about 300 km (3.5 hours) via Port Wakefield, Minlaton and Warooka to Marion Bay; Dhilba Guuranda-Innes National Park begins just west of the township (vehicle entry fee, pay online or at the Stenhouse Bay visitor centre). Boat access from the Marion Bay ramp. The Marine Life Society lists Seawolves Cove among Marion Bay sites but does not give a position; local knowledge (Adelaide shops that run Innes trips or Marion Bay locals) is needed to find it.

Only attempt it in good weather with low swell.

The southern tip of Yorke Peninsula faces the open Southern Ocean and Investigator Strait, so south-westerly and southerly swell is the controlling factor: most exposed sites need swell under about 1.5 m and are best after several days of northerly or north-easterly winds, which blow offshore along this coast. Winter cold fronts bring big south-westerly swell and strong winds and can close the area for days. Summer afternoon south-easterly sea breezes make boat runs rough, so launch early.

Visibility is typically 10-20 m in settled conditions but drops sharply with swell-driven surge. The Marine Life Society notes the cove is only dived in good weather with low swells.

Descend into the cove at 10 m, explore the caves and swim-throughs around its walls, and spend time with the resident blue groper before ascending.

No regular operator; known to local and club divers who dive the Innes coast.