You can see the rock ledges in the western channel when the tide is low. The rest of the time they are submerged, and no buoys mark their presence. These ledges, and the overall shallowness of the western channel, are the reasons it's named False Passage on the nautical charts. There is one particular ledge where the seals gather for choir practice, which they feel especially inspired to do on foggy days. The ledges belong to the shag and the terns, too. Terns are more camera-shy than shag, though.
The shag's other name is cormorant. In south shore Nova Scotia they are shag.
When the Atlantic is rough it sends strong waves into the channel. Then the waves crash over the ledges even when they are submerged, sending plumes of white spray into the air. But when the sea is calm I can even row out here.