In an ancient ceremony that occurs only once every imperial era, Japanese palace courtiers in traditional robes and hats decided on Monday where best to grow royal rice -- using shells from endangered turtles.
For the ceremony -- which Naruhito did not attend -- officials clad in long black robes and ornate black hats were seen walking slowly into a striped tent.
The rare ritual is conducted only after a new emperor takes the throne. It was last seen in 1990 about a year after Naruhito's father, Akihito, ascended the Chrysanthemum Throne.
While the shells are harvested from rare green sea turtles, they are procured as part of a conservation scheme, officials said.
People in the region have been eating sea turtles since the mid-19th century and are allowed to catch up to 135 of them annually.
Around 100 turtles are used for meat -- often consumed raw -- while the shells are used for craft objects.
Eggs are harvested from the others to keep the population stable and managed. These turtles are then released back into the sea.
Shells from eight turtles are provided to the palace but they are not killed specifically for the ritual.
The village only catches big turtles with shells bigger than 75 centimetres as mandated by the Tokyo metropolitan government, he added.
A palace spokesman said the tradition had been in place "since ancient times".
The palace "must pass this on (to the future)" although it is aware that some believe it should not use the endangered animal, he told AFP.
Many on Japanese social media voiced surprise over the ancient rite.
"Too rare and too much fun to make a decision by fortune-telling with turtle shells in modern-day Japan," said one tweet.
Another Twitter user wrote: "I feel sorry for green sea turtles even though they were not killed only for their shells. We should carry on this tradition with something else."
The rice grown in the selected provinces will be used in a ceremony in mid-November, where the emperor will give thanks and pray for rich harvests, as well as peace for the country and people.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)