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Rising sea temperatures are already bringing new species to our shores. Sunfish, sea turtles and basking sharks are common sights. But what can we expect to see in the fishing nets by 2060?

The key to the species that visit these shores is the plankton on which they feed. Species of plankton more usually found in areas of the southern Atlantic ocean are now turning up on our shores, and so are the fish and mammals that feed on them.

So will tropical species replace the cod and haddock in Britain's fish and chip shops? Will great white sharks patrol our beaches? Tom Heap takes to the water to predict the state of our seas in fifty years.

Will we all be eating Boarfish and chips? Red Mullet Goujons? Tom Heap asks whether the waters around the UK are set to become home to exotic whales and dolphins such as these pictured below.

Producer: Martin Poyntz-Roberts.

All photos courtesy of the Sea Watch Foundation library.