Actor Pamela Anderson has lashed out at Prime Minister Scott Morrison via an open letter, saying he "trivialised" the suffering of Australian WikiLeaks founder Julian Assange, and made "lewd" comments about her.

Key points: Anderson said she was "disappointed" by Scott Morrison's "unnecessary" comments

Anderson said she was "disappointed" by Scott Morrison's "unnecessary" comments The former Baywatch star said Mr Morrison should throw a parade for Mr Assange

The former Baywatch star said Mr Morrison should throw a parade for Mr Assange Mr Morrison said he had "plenty of mates who've asked me if they can be my special envoy to sort the issue out with Pamela Anderson".

Anderson, a former Baywatch star, appeared on 60 Minutes Australia earlier this month, sharing details of her friendship with Mr Assange and urging Mr Morrison to "defend your friend, get Julian his passport back and take him back to Australia and be proud of him, and throw him a parade when he gets home".

Mr Assange, who published thousands of classified United States documents, has been living in political asylum at the Ecuadorian embassy in London since 2012 to avoid extradition.

When asked on commercial radio if he would follow Anderson's advice by throwing Mr Assange a parade, Mr Morrison said: "Well no, first of all, but next, I've had plenty of mates who've asked me if they can be my special envoy to sort the issue out with Pamela Anderson."

'Your comments were disappointing': Anderson

In the November 17 letter, Anderson reiterated her plea for Mr Morrison's help, and said Mr Assange had effectively been in detention for eight years, and his human rights had been violated.

"You trivialised and laughed about the suffering of an Australian and his family. You followed it with smutty, unnecessary comments about a woman voicing her political opinion," she wrote.

"Rather than making lewd suggestions about me, perhaps you should instead think about what you are going to say to millions of Australians when one of their own is marched in an orange jumpsuit to Guantanamo Bay — for publishing the truth.

"We all deserve better from our leaders, especially in the current environment.

"I am hopeful Australia now has a leader with strength and conviction enough to bring him home."

American prosecutors recently obtained a sealed indictment against Mr Assange, which was filed by mistake, revealing the Australian is facing charges in the United States.