An illustration of a blue rectangle with waves and white bubbles in it. Below the blue rectangle, is a green rectangle with waves and white bubbles in it.
This is a completely free image Blue And Green Waves that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.