It opens on select evenings from 16:45 until 21:00 and organisers say it’s recommended to set aside at least an hour to enjoy the display.
Food and drink will be available throughout the event, but it will not be possible to see the zoo’s animals.
Lindsay Ross, events and experiences manager at Edinburgh Zoo, said it was a “thrill” to see the return of the Giant Lanterns trail.
“This year’s aquatic theme promises to take our visitors on a magical journey into the deep, exploring the world of underwater wildlife, alongside marine myths and legends,” she said.
“We hope this immersive experience helps connect people with nature and raise awareness of the importance of protecting wildlife and their habitats, from coral reefs to sea birds and everything in between.
“Every visit helps support our charity’s vital wildlife conservation work in Scotland and around the world.”