Halifax Park sits alongside Fly Point as the other half of Nelson Bay's Fly Point/Halifax Park Aquatic Reserve, but where Fly Point offers a gentler, more training-friendly profile, Halifax steps things up with a genuine wall dropping from a shallow five-metre shelf to twenty-six metres, its face carpeted in extensive sponge gardens that rival anything else in Port Stephens for colour and coverage. The wall's scale and depth range make it a better fit for divers with some experience under their belt rather than a first open-water outing, and the site rewards that experience with a strong and varied marine life list: harlequin ghost pipefish and nudibranchs for the macro-focused, moray eels and numbfish tucked into the sponge and rock, and eagle rays and wobbegong sharks cruising the sandy margins at the base of the wall. The defining challenge at Halifax Park is its current, which local divers describe in blunt terms as very strong outside the slack tide window — more pronounced here than at the adjoining Fly Point, making tide planning not just advisable but essential to a safe dive.

High slack tide is the preferred window, both because the current eases and because visibility is typically at its best, sometimes reaching a genuinely good twenty metres in good conditions. Given the shelter of Port Stephens' inner waters, Halifax Park remains diveable through more marginal weather than the open-coast sites further out, making it a valuable, high-quality fallback as well as a destination dive in its own right, and it is also rated as an excellent night dive for divers experienced enough to manage the tidal timing after dark.

Park near the Halifax Park reserve/caravan park on the Nelson Bay foreshore and follow the dirt/sand track down to the water. Like the adjoining Fly Point, this dive must be planned around slack tide, with high slack tide giving the best visibility; the current here is described locally as VERY strong outside the slack window, more so than at Fly Point, so tide planning is even more critical.

Sheltered from ocean swell inside Port Stephens but subject to a genuinely strong tidal current — this dive must be done on slack tide, and the currents here are described as VERY strong outside that window, more pronounced than at neighbouring Fly Point. High slack tide gives the best visibility. Rain in the surrounding catchments reduces clarity for several days afterward.

Enter via the dirt track at high slack tide and descend the sponge-covered wall, working from the shallow 5 m shelf down to 26 m as time and no-decompression limits allow, watching for eagle rays, wobbegongs and morays among the sponge growth, and surfacing well before the tide turns.

Feet First Dive (Nelson Bay) runs guided shore dives here; independently diveable by experienced divers who plan carefully around the tide.