Wordnet 3.0
ADJECTIVE (2)
1. 
 of or relating to the region of the sea over the continental shelf which is less than 200 meters deep; 
- Example: "neritic fauna"- Example: "neritic oil"2. 
 relating to the region of shallow water adjoining the seacoast; 
- Example: "neritic fauna"
The Collaborative International Dictionary of English v.0.48:
neritic \neritic\ adj.
   Relating to the belt or region of shallow water adjoining the
   seacost; as, neritic fauna.
   [WordNet 1.5]
WordNet (r) 3.0 (2006):
neritic
    adj 1: of or relating to the region of the sea over the
           continental shelf which is less than 200 meters deep;
           "neritic fauna"; "neritic oil"
    2: relating to the region of shallow water adjoining the
       seacoast; "neritic fauna"