Sorry to take so long -- thrilled by your wonderful designs...especially like #21 & 20 ... In the interest of jumping out of the box, I'd say #21 is preferred for the fun elements. Sea and Sun, am guessing. Fonts are nice...stay away from blues that are too bright. #20 is simple but strong. It definitely hits you. Even though it's a bit traditional, I like a lot.
#21 needs something - I just don't know what I would do...ALTHOUGH...could the waves create a 'W' that looks like strands of sea grass...?