I used white circles over a blue square to make the waves. Not mind shattering, but a quick easy way to do it that might get some people to think differently. This allows me to adjust them easily after the fact which a number of other ways to do this would not have allowed.
I drew the goldfish in Keynote. I really, really need to break myself of that habit but I’ve grown to like the vector drawing in that program despite the many, many shortfalls it has on other levels.