If living in the countryside is rural, what do you call living by the sea?

What do you call living by the beach?

Living in the countryside is a rural lifestyle.

Living in a city is an urban lifestyle.

Living by the sea is a * lifestyle?

Solution 1:

You might also consider coastal:

Defined by Random House Kernerman Webster's College Dictionary

adj. pertaining to or bordering on a coast.

Here's a magazine dedicated to it:

Coastal Living

Solution 2:

The word you want is littoral:

Of or on a shore, especially a seashore: a littoral property; the littoral biogeographic zone.

UPDATE: I'd actually like express appreciation to the down-voters and to @MadHackers counter-answer for calling me out on this. It seems I don't even follow my own advice. I had thought littoral was a more common word than others do- certainly not in everyday conversation, but more in news reports and some TV documentaries. Then again, the shows I watch and the magazines I read are not exactly mainstream.