Nunn's Beach (Portland)

Moderate risk: Boat traffic

The harbour is a working port with vessel movements inside the breakwater; snorkelers should stay aware of approaching boats.

Moderate risk: Boat traffic near harbour entrance

Proximity to Portland Harbour means recreational and commercial vessels transit nearby; a dive float and flag are recommended.

Low risk: Fishing line entanglement

The breakwater is a popular fishing spot; active lines, discarded hooks, and broken monofilament pose snag and cut hazards.

Low risk: Sharp underwater debris

Wreck remnants and rubble from the breakwater structure can include rusted metal, concrete edges, and exposed rebar.

Low risk: Slippery rock entry

Some shore entries (particularly over the breakwater rock wall) are steep, slippery, and may require ladders or ropes.

Low risk: Easterly swell

Easterly winds create unfavourable conditions and stir up sediment, reducing visibility at Lee Breakwater.

Low risk: Fishing lines and hooks

The breakwater is popular with anglers; active and discarded fishing lines pose entanglement and laceration hazards.

Low risk: Open ocean swell exposure

Nunn's Beach opens to the ocean; larger swells can reduce visibility and create surge near the reef.

Low risk: Variable visibility

Visibility drops significantly after northerly or easterly winds; best after westerly or southerly winds with low swell.

Low risk: Kelp in shallows

Thick kelp growth can occur in shallow areas, making entry and exit slightly more challenging.

Low risk: Kelp entanglement

Large amounts of kelp can accumulate in shallows near the reef sections, potentially causing entanglement for swimmers.

Low risk: Artificial beach structure

The beach is heavily modified and artificial — submerged rock or concrete structures may be present beneath the surface near the breakwater.

Low risk: Boating traffic adjacent to harbour

The beach lies immediately north of Portland Harbour; boat traffic and occasional wash may occur near the breakwater end.

Low risk: Occasional strong southerly winds

Southerly winds can create choppy surface conditions, reducing visibility and making entry more difficult.

Low risk: Boat traffic near breakwater

The beach lies adjacent to Portland Harbour and the Lee Breakwater, where recreational and commercial boat traffic may be present.

Low risk: Ship traffic

The outer reef edges are near Portland Harbour shipping channels; check for planned ship movements before snorkeling the outer reef.

Low risk: Kelp overgrowth

Large amounts of kelp can accumulate in the shallows, making entry and navigation difficult at times.