He sees sharks swimming very close to the shoreline, he knows there are moray eels living in the crevices, and the birds have their nesting grounds on the beach nearby.
German submarines may detect they are on the island has nothing to do with swimming or water.
Sorry, I don't see the statements?
It could be innocence because a plot is a plan to do something harmful or illegal.
It would take 2 months for the clocks to aline again. This is because even though one clock gains one minute a day and the other clock loses one minute a day they are losing it the same speed just opposite directions. So therefore all the clocks would aline again at 12 o'clock 2 months later.