It's possible you're thinking of one of her paintings that features a shoreline, or maybe you're remembering a specific detail from a biography or article about her life.
To help me give you a better answer, can you please tell me:
* What specific painting are you thinking of? Do you have any details about it like its title, the colours used, or the year it was painted?
* What is it about the shoreline that interests you? Are you curious about her artistic style, her choice of subject matter, or the historical context?
With more information, I can help you understand Emily Carr's relationship with the shoreline and her artistic approach to depicting it.