New Zealand Food Safety have removed the public health warning against collecting shellfish at Waiheke Island, from Blackpool and Surfdale Beaches.

"Latest investigations have found that all evidence of the presence of the Cyanobacteria bloom has disappeared and shellfish are now safe to gather and consume," says a Ministry of Primary Industries spokesperson.

New Zealand Food Safety have also removed the public health warning against collecting shellfish from the Inner Queen Charlotte Sound.

The area included from Anakiwa to West Head and Deiffenbach Point. Further sampling of shellfish in the area has shown that PSP toxins are now at safe levels.

MPI test shellfish and seawater for toxic algae every week from popular shellfish gathering areas around New Zealand.

"If the shellfish are not safe to eat, we issue public health warnings and put up signs at affected beaches."

If someone gets sick after eating shellfish, make sure you:

• phone Healthline for advice on 0800 61 11 16, or get medical help immediately
• advise your nearest public health unit
• keep any leftover shellfish in case it can be tested.