Seabeaches are the sandy or pebbly areas by the sea where people swim and play.
Seabeaches are usually thought of as fun and relaxing places.
Examples:
We build sandcastles on the seabeaches.
The seabeaches are full of people in the summer.
I like to collect seashells on the seabeaches.
The seabeaches are the best place to play in the water.
The seabeaches have the most beautiful sunsets.
We always have a picnic on the seabeaches.