Ard-na-cuille is a scenic wall at the southern end of the Sound of Kerrera.
Depending on which way the tide is going, divers can be dropped in at the north or south of the point, and swim round the point and back again in the shallows. However, nearer the surface the effect from swell is considerable, and swell can be slightly felt even at depths of 25 metres even with only a 1 metre swell at the surface.
The wall drops down to around 25-30 metres, although in some stretches divers have reported the wall continuing to much greater depths. The top 15 metres or so are quite kelpy, but lots of life can be seen in between and on the kelp, including nudibranchs, bryozoans, sea urchins and spider crabs. Below the kelp line, the wall is covered in life. There are many devonshire cup corals, huge plumose anemones, dahlia anemones, burrowing sea cucumbers in the crevices, northern feather stars, dead man's fingers, nudibranchs, velvet swimming crabs, edible crabs, norwegian topknots, sand gobies, and many other sponges and anenomes. Look out for the beautiful delicate peacock worms under the overhangs. The wall also has hundreds of small shoaling fish who shelter and feed there. At the bottom of the wall is a shingle slope, sloping down to between 45-60 metres. There are many scallops and hermit crabs to be found on this slope.
If divers ascend up the wall, they must be sure to swim out from the wall for pick up, particularly if there is any swell. This rich scenic site is an excellent dive for those who enjoy impressive underwater rock features due to the size of the wall. Macro photographers will be in their elements, and in good light and good visibility wide angle lenses will be able to capture the impressive size of the wall. Seasearchers and lovers of marine life will also have lots to see.