My silent reading

In my book it is about a boy called William and his sister Sheena. And there at there at in inland with there uncle Dr d and they. Think it a really nice place but billy goes nearly out of the reef but Then A OCTOPUS  GARBED HIM BUT IT HAD 12 ARMS and. It was Dragging him down down down the end ahh jokes the. Uncle saved him so come next time because that is all I read. because it was very long.