Crabs scuttle sideways across sandy ocean floor.
Meaning: This sentence describes the characteristic movement of crabs as they walk sideways across the sandy bottom of the ocean.
Choice of Words: Crabs are crustaceans with a hard outer shell and ten legs. Scuttle means to move quickly with short steps, while sideways describes movement to the left or right rather than forward or backward. Sandy refers to something covered in or made of sand, and ocean floor is the bottom of the ocean.
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