Is it dinosaur? Is it a giant lizard. Does it swim or does it fly. And what is it doing on signs all over Weymouth?

Cut-out illustrations of the mystery green creature have been attached to lampposts and placed at ground level.

Theories abound as to what it is - some say it's definitely and aquatic creature - possibly an icthyosaur or a plesiosaur.

The one pictured here was seen near the Granby Industrial estate. Another was sent directly to the Editor at the Echo, but without any accompanying information.

So what's it all about? email us now if you know or if you know who has put up the mystery signs.

Telephone Harry Walton on 01305 830982, email newsdesk@dorsetecho.co.uk or comment below