The 50m by 6m work of art will feature the estimated 190 sharks that die every minute around te world.
"Sharks often make the headlines for the wrong reasons. However, rather than being a threat many species of shark are under threat themselves," Ms Palka said.
Around the world about 270,000 sharks are killed every day - many just for their fins, she said.
The practice had been banned by almost 100 countries and states but was still legal in New Zealand.
"That's got to stop. Globally, shark finning is threatening the survival of many species of shark. It is time for New Zealand to catch up, and show that it really is clean and green," Ms Palka said.
Shark Awareness Week was being organised by the New Zealand Shark Alliance - a coalition of organisations that are working together to promote awareness of sharks and the need to end shark finning.
The New Zealand Shark Alliance is made up of Greenpeace, Forest & Bird, WWF, ECO, Sea Shepard Our Seas Our Future, White Shark Conservation Trust, New Zealand Underwater, Shark Fin Free Auckland, ITM Fishing show, Kelly Tarlton's, and Earthrace.
By the numbers:
* NZ is one of the top 20 exporters of shark fins to Hong Kong, alongside Spain, Taiwan, and Singapore;
* NZ shark fin exports are worth $4.5 million annually;
* more than 73 of the 112 shark species in NZ waters are commercially fished;
* 9 per cent (11 species) are managed under the Quota Management System; and
* the remaining species in NZ waters are unprotected.
(source: Forest and Bird)