Gema has in a previous post introduced a colour changing nail polish she got her hands on whilst in the States. She was kind enough to bring one back for me too, but I haven't had time to try it out until now and I was also lacking design ideas. Starting off with the incredibly broad search term "ice blue design" I came across a few sea themed designs and couldn't resist trying it out.
I think I may have a minor crush on the shark below. It was brilliant typing, as it looked like my keyboard was under constant shark attack (yes, I'm rather easily amused). In addition to the base colour Del Sol - Electrick I used Kiko's holographic grey and then normal black and white. Eyes were done with pin-dotter and other details with a toothpick.
The octopus is Maybelline's Colour Show - Purple Gem and the crab is TempleSpa's Monaco. Unfortunately the white dots got a bit mis-coloured in the sun but overall the design was well received!