Upon reading this, I realize what I need to work on the most. I always try to have a big build to something and I think my 'reveal' makes sense but then with these critiques I realize that I am falling short. I definitely use these challenges as a way to push myself in ways I normally wouldn't. My ultimate goal in the end is to be able to come into one of these challenges and make a fully formed bit that reads well and makes sense from start to finish. My goal is to improve with every story I do.I think the format is great, but it was just a little too vague for me; the why and the who. I suspected the waves or merfolk were 'they' but there wasnt a 'reveal' which tends to go well in the 75 word challenges. I liked the use of 'my' well worn path because if she/he is risking getting cuts using her own path (her own choice), then it hints at some form of self-deception and/or harm, but I don't think you meant that.
As far as first encounters with flash fic goes, I think you did a great job, but the pathos inferred came to comparatively little at the last line.
The thing with the challenges is they're best used as tools for your own writing elsewhere rather than aiming for wins -- although wins and votes are important, too. People are probably fatigued from my constant 'do the challenges!' cry when someone wants to improve their writing, but it's an incredible tool to sharpen your prose.
'The shock of their cold and sway of their waves calmed me.'
In my head this line was supposed to really be the 'reveal'. Ultimately 'they' were used to personify the water as a living entity.
Thank you so much for you feedback!