Damien Hirst: Treasures from the Wreck of the Unbelievable review – a titanic return

Palazzo Grassi and Punta della Dogana, Venice

Artist has once again found the underwater grotto in his mind where monsters live, making a fool out of all of us who lost faith

Damien Hirst gives first glimpse of new Venice art – but can he win back critics?

With mysterious underwater objects hinting at monsters and ancient civilisations – including a $4m Medusa – Damien Hirst could be about to reverse years of creative decline