littoral (adj.) Look up littoral at Dictionary.com
"pertaining to the seashore," 1650s, from Latin littoralis "of or belonging to the seashore," from litus (genitive litoris) "seashore" (compare Lido), of unknown origin, possibly from PIE root *lei- "to flow." The noun is first recorded 1828, from Italian littorale, originally an adjective, from Latin littoralis.