Thank you for not visiting: tourist hotspots that have done a Koh Tachai

Thai authorities have closed the celebrated scuba-diving destination to visitors - but it's not the first 'honeypot' site to take such action

Related: Thailand closes 'overcrowded' Koh Tachai island to tourists

The trouble for Koh Tachai was that its beaches were just a little too white, its coral reef too colourful, its marine life too dazzling. Now you can't go there, because Thai authorities have shut it to tourists - the latest and most drastic response to a booming and increasingly itinerant global population.