play beach volleyball, frisbee
make sand castles and write messages in the sand
windowshopping in little seaside shops, walk around the beach, visit lighthouses and historical places nearby
sunbathing, reading and relaxing
surfing or any other type of water sports like jet ski racing, kayaking, waterskiing, or kite surfing
sandboarding, wakeboarding, trekking, island hopping
watch the sun rise and set and take photographs