Joanna Lumley and Jason Momoa join prominent group backing Great Barrier Reef ‘in danger’ listing

Exclusive: Stars, activists, conservationists and Prince Albert of Monaco unite in support of Unesco's recommendation to world heritage committee

An international line-up of actors, conservationists and scientists, including Joanna Lumley and Hollywood star Jason Momoa, has backed calls for the Great Barrier Reef to be placed on a list of world heritage sites in danger.

The scientific evidence is beyond doubt: the Great Barrier Reef is in danger and it is time to act," the group said in a global statement released to Guardian Australia.