I'm not able to write a proper summary of this article because the content provided is extremely limited. All I have is the title "Even Mussels Get Scared," a brief tagline, and a source attribution to Nautilus. There is no actual mathematical content included for me to summarize.
Could you paste the full text of the article? Once you share the complete content, I will be happy to write a clear and engaging 3-paragraph summary for mathopen.com.