A rarely seen sea creature has been spotted crawling its way along a Sussex beach.

Conservationists captured footage of the mysterious creature in a nature reserve, showing it moving slowly along the sands after high tide.

While some might think it looks like something out of a sci-fi film, the marine creature was identified as a Sea Mouse – a type of worm which can usually be found on the seabed.

After spotting the creature in Rye Harbour Nature Reserve, conservationists from Sussex Wildlife Trust returned the creature back to the sea.