Oliver Sun Fun kids have been keeping busy this summer with a variety of activities, including sand castle building. Here, Ava Kosaka gathers a bucket of sand for her ambitious project at Rotary Beach. (Lyonel Doherty photo)

Oliver Sun Fun kids have been keeping busy this summer with a variety of activities, including sand castle building. Here, Ava Kosaka gathers a bucket of sand for her ambitious project at Rotary Beach. (Lyonel Doherty photo)