Here be monsters.

A 1,000 strong crowd gathered at Tenby on Friday evening as a mighty sea creature was spotted in the waters off the beach.

The Cragen, a mythical beast from the depths, came ashore at North Beach and warned of the dangers of polluting the seas with plastic.

Once on the beach the 20-metre long beast was met by sea monster expert, Professor DW

The Cragen is the creation of the Cardigan-based Small World Theatre, and staff have taken months designing and creating the giant sea-faring puppet.

“Small World Theatre had an amazing time visiting Tenby with Cragen,” said a theatre spokesman.

“More than 1,000 spectators lined the beach or watched from the town.

“It was exciting being amongst the crowds of families and day trippers making their way through the streets to North Beach and finding their preferred vantage point.

“They were drawn by the magic of meeting a sea monster.

“The atmosphere was one of anticipation as Professor DW appeared from her tent to share a lifetime's study of sea monsters.

“With the help of her sea creature ‘specimen’ the audience quickly picked up basic Cragen-ish as was able to welcome the monster with great effect.

“We thank Keep Wales Tidy and Pembrokeshire Coast National Park Authority for being by our side, organising a beach comb and educating visitors on the importance of recycling.

“Thanks to Angus and Tenby Boat Trips for keeping Cragen safe as she approached Tenby’s shores.

“Today’s performance was even more special as it coincided with the launch of Visit Wales’ Year of the Sea summer theme, ‘Coasts Alive’.

“Cragen is just one of the events celebrating the festival season on the Welsh coast and it’s going to be a great couple of months.”

Cragen is now expected to appear at Stackpole Quay on August 3 followed by sightings in Fishguard, Aberystwyth and New Quay.