beautiful, fine (esp. BrE), lovely
palm-fringed (esp. BrE), sun-drenched (esp. BrE), sun-kissed (esp. BrE), sunny, tropical
golden, sandy, white, white-sand
pebble, rocky, shingle (BrE)
bathing, pleasure (both esp. BrE)
deserted, empty, private, secluded
pristine, unspoiled
The island group has over 230 miles of pristine tropical beaches.

nude (esp. AmE), nudist (esp. BrE)

overlook
They sat on a grassy hill overlooking the beach.

stretch
a beautiful golden beach stretching for miles

towel, umbrella
house, hut
volleyball
holiday (BrE), vacation (AmE)
resort

along a/the beach
He walked along the beach.

at a/the beach
They met at the beach.

on a/the beach
She lay on the beach and read her book.

Beach is used with these nouns as the object:
boat