The person in whatever authority who passed the responsibility for maintaining Calis beach to the so-called Environmental group should be identified, frog-marched to the beach and shown just what a filthy mess it is. And then be made ( not asked ) to explain how they can equate the filth and danger of an unclean beach with "environmental" policy. Preferably with a local TV crew in attendance.
Unless they are the members of the Rat Appreciation Society I doubt they could come up with a believable answer.
At least last year the beach did get a fairly thorough clean up before the season started, the umbrellas looked fresh and new, and there was occasional cleaning up during the season. Oh, and far more rubbish bins were placed ( and emptied fairly regularly ) around the entrance to the beach. And the steps down to the beach repaired. And the " wall " repaired and repainted. All in all, it made the beach look cared for.