Sharks

Ally Connell, 38, was only a mile from shore on a fishing trip when he saw a massive shark fin poking out of the water.

Kayaker spots large shark fin circling around him off UK coast

Huge shark spotted off coast of St Ives in Cornwall: Footage captures basking shark ‘longer than some boats’

Watch the moment ‘huge shark’ is spotted by tourists in UK waters

Holidaymaker Sarah Craven believes she saw two crocodiles off the coast of Yorkshire - this is a still image taken from the video shared on Facebook.

Holidaymaker spots ‘two crocodiles’ off UK coastline

The Thames had been declared 'biologically dead' in 1957 (Photo: Dan Kitwood/Getty Images)

Sharks and seahorses are now living in the River Thames