A device or instrument used to view or observe aquatic life, underwater scenes, or the inside of an aquarium more closely.
From Latin 'aqua' (water) plus Greek 'skopein' (to look at), creating a term for a water-viewing instrument, though it's rarely used in modern English.
Before smartphones with underwater cameras, aquascopes were actual instruments people used—they represent a whole era of mechanical gadgets designed to make hobbies more engaging!
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