They found a completely free beach. No other people.
"This is perfect" Felix dad said.
"Yeah a whole beach just for us" Tobi said.
The next few hours they spend with swimming. Felix and Tobi played waterball while their dad was afraid of the cold water and stayed out of the water. His sons found that very funny.After a few minutes he joined the others in the water. They had a lot of fun, especially because there were no other persons at this beach. In addition to that the water was totally clear. After one hour, Tobi started to dive a little bit. He saw some very beautiful fishes. After that they all laid down on the picnic deck they brought with them. After eating their picnic they started to leave.
"Let's go" said the mum.
Felix answered "I'm coming, I just want to collect some... Ouch!!!"
He looked down and found the thing that cut his foot. It was...