The Mysterious Waves — Mark Derwinter Cook

It's a lovely sunny day and the English Channel is as quiet as a mill pond. Expecting to meet up with his good friend Rowdy Dave at the small port of Little Oggle, Lord Rissole confidently guides his new boat Miranda towards the island bird sanctuary that is Oggle Rock, unaware that deep down below the surface of the channel something rather menacing is lurking. What will happen to Rissole and Miranda when they become the victims of the menace beneath the waves? And how will Dave and his friends attempt to rescue them from their desperate situation? Find out in this the second book of the Rowdy Dave series.