A beach: a sandy or pebbly shore by the sea or a lake, often used for swimming, sunbathing, or walking.
夏休みに友達とビーチでバーベキューをした。
I had a barbecue at the beach with friends during summer vacation.
朝早くビーチを散歩すると気持ちがいい。
It feels nice to take a walk on the beach early in the morning.
そのビーチは波が穏やかで家族連れに人気だ。
That beach has gentle waves and is popular with families.