Sharks

<p>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.</p>

Holidaymaker spots ‘two crocodiles’ off UK coastline Andrew Quinn

Sharks and seahorses are now living in the River Thames Rhona Shennan

Sharks that glow in the dark have been found off the coast of New Zealand Claire Schofield