Build ups are Awesome!! Great way to End to your song.
one thing i will say, After the drops your kick sounds like it's taking over the melody. took me a while to get used to.
usually i'm not a fan of dance due to repetitive loops, but the drops are awesome!!

while i do agree with NyropheneYT, ... hm (thinking) ! you ever considered risers for the beginning? the hits are perfect, the only empty variety you have is perfect to fill.
speaking of variety, besides the beginning, you have a great amount throughout this song!

whoa! i love the water scheme, you can definitely give more interference where the water makes contact with (small little ripples surrounding the contact point). one other small thing if you can outline (no need to use black) the waterline from the sky. the sky is a reflection of the ocean water, just some way of showing contrast. ... damn it, now i wanna go swim!! B)

simple city landscape, with awesome background compliment.
is it too much to ask for a more complex city? I love the background, you could do a lot of details to the buildings you got!!