English to French Science Environment & Ecology

I have a document about the intertidal zone to translate.

Here is the sentence I have a problem with:

"The intertidal zone has four distinct physical subdivisions: the spray zone, and the high, middle, and lower intertidal zones."

I found a translation for "high, middle and lower intertidal zones" (étage supra-, médio- et infralittoral) but I don't know how to translate "the spray zone" as it seems to be the same as the high intertidal zone. Any ideas?

Thanks a lot for your help!