The Cooper family from the US are in Costa Rica for two weeks. Mike and Jane Cooper, their daughter Ann (15) and their son Toby (16) are staying by the beach in the village of Punta Banco. But they aren’t here just to swim and lie on the beach. They are here to work. Their job is to protect sea turtles.

The Coopers are working for a group called Pretoma. “We’re volunteers—we don’t get any money for doing this,” says Jane. “But it’s good to help these animals.”

Sea turtles lay their eggs on the beaches here. They come out of the water at night , make a hole in the sand and lay their eggs. Then they bury (埋) them and return to the ocean. But some people take these eggs and sell them.

The Pretoma volunteers at Punta Banco are trying to protect the sea turtles and their eggs. “We walk along the beach every night and look for turtles laying eggs,” says Ann. “We wait for the mother to go back to the water. Then we dig up the eggs, take them to the hatchery and bury them. The hatchery is an area with a fence around it. The eggs are safe there. In about two months , volunteers will take the baby turtles back to the water.”

But it’s not all work for the Coopers. In the daytime they can swim or just get some sleep. Toby plays soccer with the children in the village. “This is a great vacation,” he says. “We’re doing good work and having a nice time. I want to come back next year.”

People all over the world celebrate（庆祝）Halloween. It falls on October 31st every year. On that night, children dress up in costurnes（戏服）and go door-to-door to ask for candy. They shout, "Trick or treat!" This means "give me a gift like sweets or a toy, or I'll play a trick on you!" It's a big part of the holiday.

But some US cities have rules about trick-or treating. They say kids above the age of 12 can't go trick-or-treating.

Some people just think it's silly（可笑的）for older teens to go trick-or-treating. Others think that teenagers stop tick-or-treating at a certain age anyway. They go to a party with their friends instead.

I stopped tick-or-treating around my early to mid-teens. So I guess I would be fine with the rule. But I'm not sure if it's right to ban（禁止）older kids from trick or treating, especially if they have tried to put together a creative costurne.