The seashore turns to desert when the tide goes out, and rockpools become oases. Fish, prawns, worms, shrimps and sea anemones have perfected their survival techniques to cope.
There are fish that can live out of water, or stick to the rocks like limpets. They all await the new tide - but will they survive that most dangerous of predators - the 9-year-old human with a fishing net?
BBC Bristol
(Ceefax subtitles)