Figure 4
From: Wild sea otter mussel pounding leaves archaeological traces
Use-wear damage on rocks at the Bennett Slough Culverts (BSC) site. (A) Sea otter damage on the corner of a quartzite boulder at BSC South; the scale is 10 cm. (B) Emergent boulders damaged by sea otters on their upper surfaces (circled) at BSC North, with the rocks further from the water topographically higher; the water level is mid-height. (C) Emergent anvils at low tide at BSC North, with the boulders seen in (B) on the left. Mussel shell deposits are visible above and below water in the three views.
