Manila clams (Ruditapes philippinarum) of A. Small (<2.5 cm) and B. Large (>2.5 cm) size classes naturally-occurring under (filled symbols) and outside nets (open symbols) at four sites in Willapa Bay, Washington. Data are from Nov/Dec 2024, when nets had been present for 8 (exclosures 2 and 3: ½ inch-mesh) or 12 months (exclosure 1: ¼ inch-mesh). Each point is the average of 3–11 subsamples. For data analysis, subsamples were appropriately nested (169 samples in 25 groups).