* Spume: This is a more scientific term for foam, especially when referring to the foam on water.
* Whitecaps: This usually refers to the foamy crests of waves, but can sometimes be used for sea foam.
* Sea froth: This is a slightly less common term, but essentially means the same thing as sea foam.
Other terms that might be used in specific contexts include:
* Marine foam: Emphasizing its oceanic origin
* Saltwater foam: Focusing on the salt content of the water
Ultimately, "sea foam" is the most common and widely understood name for the foamy substance found at the ocean's surface.