"Hopefully we can do something about it, and we can know what's going on because it's really weird, especially that there's two sharks."
This brings the toll of sharks who have died on Auckland beaches to three in two days.
On Thursday a 2.7m female juvenile great white shark was spotted on Orewa beach after getting caught in a fishing net.
Department of Conservation (DoC) marine scientist Clinton Duffy said the shark was caught in a gill net that was set off the beach.
"The people who found it in the net tried to revive it, as it is protected, but it was too late," Duffy told the Herald.
On Monday, Orewa beach was closed after a sighting of two large sharks about 200m offshore.
A photo of the shark was posted on a Facebook community page, reeling in hundreds of comments from people.
Many expressed sadness, with one person saying "Put it back" and another saying "How sad, leave them alone."
Duffy stressed most sharks were harmless and are not interesting in eating people, especially sharks under 3m long.
However, he recommended anyone who spotted a shark to get out of the water as quickly as they could.
