This rock formation is called the Sea lion, but can be challenging to envision the animal’s shape from that of the rock.
The caption states:
Sea Lion, Silver Island, near Port Arthur, Ont., Canada
–The island is now better known as Silver Islet, and acquired the name from a silver mine located there. The town of Port Arthur no longer exists as such, having been merged into the city of Thunder Bay.
This card was used and is dated 8 July 1930.