Definition for salt water life zone

Let me google that for you (http://lmgtfy.com/?q=definition+for+salt+water+life+zone)

Hi! teasley70, welcome to AMHD :)

See post #2:
https://www.askmehelpdesk.com/ecology-environment/where-freshwater-saltwater-life-zone-within-tropical-rainforest-127770.html


This gives a good definition:
Water ecology FAQ (http://www.lenntech.com/water-ecology-faq.htm)