verb [ intrans. ]
(of a person or animal) be or remain hidden so as to wait in ambush for someone or something : a ruthless killer still lurked in the darkness.
• (of an unpleasant quality) be present in a latent or barely discernible state, although still presenting a threat : fear lurks beneath the surface.
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I think the dictionary's definition pretty much says it all…except for a maybe few provenance details re. each image.
The shot of the lurking crab spider was made a week or so ago in my backyard patch of purple coneflowers. To my mind, the sneaky arachnid appears to be assessing the odds of perpetrating a successful malevolent act upon the unidentified skipper.
The snap of the equally sinister and scheming soft-shelled turtle came from the pool in front of the cottage two days ago. This cunning predator lurks both deep and shallow—directly on bottom in a good imitation of an alge-green stone, and cruising just under the surface, like Bruce-the-shark in Jaws. Here, it's grab a gulp of air and a quick up-periscope look to see if there might be a tasty duckling paddling about in unsuspecting bliss nearby.