Littoral (?), a. [L. littoralis, litoralis, from littus, litus, the seashore: cf. F. littoral.] 1. Of or pertaining to a shore, as of the sea.
[1913 Webster]

2. (Biol.) Inhabiting the seashore, esp. the zone between high-water and low-water mark.
[1913 Webster]