Sentence:  They swam, and scrambled together along the cliffs, and waded in the river, and fished, and dug holes in the mud, and stared at the degenerate sea squirts, and collected buckets full of mermaid's purses, and captured <WSD>razorfish</WSD> and cockles.” 
Meaning of the word marked with <WSD> tags:  Any of various unrelated fish, including those of the genera (noshow=1), (noshow=1), and "Xyrichtys".