A Wave is symbolized as one of the strongest forces on earth. so strength for one. also if you read more into it, its about faith, a wave is you against mother nature, you cannot control it, you just have to put your faith into her.
Dragonflies symbolize our ability to overcome times of hardship. They remind us to take time to reconnect with our own strength, courage, and happiness. I grew up loving dragonflies; when I learned what they symbolize, I appreciated them so much more.