Publisher's Synopsis
It’s the beginning of the summer holidays, and Thomas, Kelly, and Nipper can’t wait to meet up again with Jack. The son of a local fisherman, Jack always knows where the best places are to explore along the Cornish coastline.
On their first day, in a remote sea cavern they find a strange craft…a submarine, barely large enough to hold four children…a magic submarine! Inside there is a book that tells them how to operate the simple controls, and that it will take them to any chosen destination around the coast and return them safely.
Not without a little apprehension, they set off on an amazing adventure under the sea. As well as causing a scare amongst the town’s holidaymakers, they uncover a massive lobster bed that will save the angling livelihood of Jack’s father and befriend a wild seal. The seal helps them to rescue a boy who was believed to have drowned on a trawler two months earlier, and who had been living alone in a deserted coastguard station on Seal Island.
