Sentence:  Most <WSD>shrimps</WSD> belong to one of several families of the Infraorder Caridea (Chapter 4). However, coral <WSD>shrimps</WSD> and Venus shrimps are so different from the rest that a separate infraorder is warranted. 
Meaning of the word marked with <WSD> tags:  Any of many swimming, often edible crustaceans, chiefly of the infraorder Caridea or the suborder Dendrobranchiata, with slender legs, long whiskers and a long abdomen.