Sea Eagle Bay Rocks is a line of granite rocks running south from the shore of Sea Eagle Bay, the remote beach between Oberon Bay and South Point on the Prom's western coast, and Scuba Doctor calls it a rewarding site. The dive follows the rocks seaward as they become large underwater boulders containing numerous crevices, from about 10 m near the shore to 40 m at the outer end. The boulders are granite, stacked and leaning to form the gutters, overhangs and short swim-throughs typical of the Prom, with kelp on their tops in the shallows giving way to colourful sponges, sea squirts and tubeworms in the deeper crevices.

The oddity of the site is at 16 m: an unusual pile of logs, possibly shipwreck cargo or natural debris accumulation, lying among the boulders and now colonised by growth – timber cargo was lost from several vessels along this coast in the nineteenth century, and the pile is a reminder that the whole western Prom is a ships' graveyard. Fish are the inshore reef community – old wives in pairs under ledges, sea sweep in schools above the rocks, wrasse and scalyfin defending their patches – rather than the perch clouds of the deeper walls, and the site suits a diver who likes to work slowly through boulder topography looking into holes. It is one of the closer southern sites to the Tidal River beach launch, about 8 km, which makes it a practical first dive of the day on the way to South Point or the Anser Group, and a fallback when the outer islands are too rough but an easterly wind is holding the western coast flat.

Within the marine national park, no take applies.

Boat only. The nearest launch is the Tidal River beach ramp at the western end of Norman Bay (4WD beach launch, key and deposit from the Parks Victoria office; needs several people and calm surf), from which the western islands are 5–12 km. Larger trailer boats launch at Port Welshpool (sealed ramp, Corner Inlet) and run about 50–60 km around South East Point – 1.5–2 hours – or at Sandy Point (Waratah Bay, beach ramp) and run 35–45 km south-east.

Sites are exposed to Bass Strait and require settled weather, a seaworthy boat, radio, and self-sufficiency: there is no rescue or refuelling closer than Port Welshpool. Sea Eagle Bay is about 8 km south of Tidal River down the western coast – the closest of the southern boat sites to the beach launch – and 4 km north-west of South Point. Anchor in sand off the line of rocks in 15–20 m.

Best with calm seas, no swell and no wind; light offshore north-easterly to south-easterly winds acceptable, moderate to strong onshore south-westerly to north-westerly winds not. Slack water recommended because of possible strong currents along the western coast. The western Prom faces the prevailing south-westerly, so easterly-wind days in late summer and autumn are the window; use the Sea Eagle Bay tide predictions.

Descend the anchor onto the boulder line at 15–20 m and follow the rocks south, exploring the crevices between the large boulders and looking for the log pile at 16 m, to a planned maximum of 30–40 m at the outer end. Turn at half gas, return north along the other side of the line and ascend the anchor with a safety stop.

No dive charter operates at Wilsons Promontory. Sites are dived from club and private trailer boats – Dive La Trobe, VSAG, Melbourne University Underwater Club and Dive Victoria Group run occasional camping-and-diving trips – launching at Tidal River (beach launch, permit/key from Parks Victoria), Port Welshpool or Sandy Point. Wilsons Promontory Cruises (Port Welshpool) runs sightseeing cruises to Skull Rock and the islands but no diving.