I am doing a cruise ship cake and was wondering what you guys use for the ocean? I have some ideas but would love your input. Thanks

To add to the list do some ice cubes on a seperate surfae, pour isomalt over them ,then when it setstake it off the melted cubes, lay it around your cake

where do you get isomalt from?

If you did just sugar and water (with blue food color) and boil to hard-crack and pour it tends to break all apart and look super cool.

Blue Jello works too. Twice the jello for the water so that it won't melt as easily.