Senses alert, danger lurks nearby.
Meaning: This sentence describes the fish being aware of its surroundings and being ready to react to any danger that may be nearby.
Choice of Words: Senses are the abilities that allow us to perceive the world around us. Alert means paying attention and ready to react. Danger is something that could cause harm or injury. Lurks means to wait hidden in order to attack. Nearby means close to something.
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Related Expressions