Police have named the diver who collapsed affer leaving the water at a bay north of Gisborne.

Wiremu Tuakana Teneti-Northover of Outer Kaiti surfaced from a dive at Anaura Bay on Sunday and collapsed.

The 54-year-old was initially found unconscious, then suffering cardiac arrest just before 9.50am, a St John Ambulance spokeswoman said at the time.

"Despite the efforts of the Fire Service and ambulance he could not be revived," police said.

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The death has been referred to the Coroner.