The site consists of a smooth rock reef which slopes steeply onto a sandy bottom.
The wreck of the small puffer Margaret Niven lies about 30m out from the base of the north east face in about 28m. The site consists of a smooth rock reef which slopes steeply onto a sand/mud bottom. You can either dive the reef on its own or dive the wreck down the shot and then head up the slope to finish the dive off on the reef. The wreck is quite small and therefore not enough to occupy a whole dive. The rock pinnacle that had sealed the Margaret Niven’s fate is covered with life, and is a delightful dive in its own right.
Kelp obscures everything above 6m, but the wall is covered in soft corals. The best part of the reef is a large crack that runs along the north east face which is usually full of fish. The cracks and crevices are home to edible crabs and squat lobsters, and around the site can be seen pipefish, queen scallops, lesser-spotted dogfish, pipefish, edible crabs, and queen scallops. The best part of the reef is a large crack that runs along the north east face which is usually full of fish. The north face is almost sheer in places but is mostly barren rock. The west side is shallower and does not have much life. There are some pottery fragments on the top of the reef in the small gulleys, which may have come from the wreck. Look out for Queen Scallops (Aequipecten opercularis) on the sand at the base of the reef.