Keep looking

You keep your gaze on the beautiful mermaid, waiting for the enchanted telescope to do its trick, and sure enough after a few moments the mermaid appears to get a troubled look in her expression. She begins fidgeting around as if hot and bothered, before taking a quick glance at her surrounding and beginning to apparently masturbate herself with her fingers, dipping them into a previously unseen snatch hidden by her fishlike scales.

Oh yeah, Patchy could definitely tell why the ol captain from legend went blind using this thing. The telescope was a powerful artifact, and you were sure that at this point, the young mermaid couldn't help but keep fingering herself until reaching climax. This gave you an opportunity to sneak up on her if you wanted to take the risk, the question is, is it worth it?