By the sea (7)
I believe the answer is:
coastal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">by the sea</span>' is the definition.<br/ ><span class="explanation-format__explanation">(by the coast)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for coastal that I've seen before include "along shore" , "of shoreline" , "near the seaside" , "Like seaside resort" , "Bordering the sea" .)