Commercial shellfish harvesting has resumed in most areas of Tasmania's east coast but the scallop fishery has closed early because of a toxic algal bloom.
Thirteen harvest zones between Marion Bay and Eddystone Point were affected by the naturally occurring bloom.
After intensive testing, the Department of Health has opened the zones to commercial oyster, mussel and clam harvesting.
A public health warning is still current for crayfish, abalone, crabs, periwinkles and sea urchin.
The toxin contained in the bloom can be deadly to humans if consumed in large quantities.
Spring Bay Seafoods resumed harvesting last week, after the bloom prompted a worldwide recall of its mussels in November.
The scallop industry has decided to abandon the last three weeks of its season, resulting in a loss of about $1 million.
The fishery was already closed for five weeks, when the bloom was first discovered.
About 350 tonnes of scallops will be left unharvested.
