Tidal patterns for #MonochromeMarch

A wee update on this month's black and white event - please only post NEW work created in March, not images or artwork from your archive.
Ideally, 1MB files or larger would be preferred for the free PDF e-zine I am planning to produce at the end of the month.
And finally, if you would like your image to be considered for the e-zine please add 'ZINE PERMISSION GRANTED' to your post.
Thank you for the amazing response so far - keep posting!
Steven

Just to clarify something - for film shooters I understand the logistics and time constraints, having been one myself for decades, so I'm happy to bend the rules just a wee bit to encourage them to take part.