SUE SKINNER An investigation is under way after three sharks died at Hunstanton Sea Life Sanctuary. The blacktip reef sharks had spent the past month at the santuary's sister aquarium at Yarmouth while their tank at Hunstanton was drained for maintenance and redecoration.

SUE SKINNER

An investigation is under way after three sharks died at Hunstanton Sea Life Sanctuary.

The blacktip reef sharks had spent the past month at the santuary's sister aquarium at Yarmouth while their tank at Hunstanton was drained for maintenance and redecoration.

They were transported back to Hunstanton on Friday but died shortly after being put back into the refurbished tropical ocean tank.

So far their deaths are a mystery, particularly as two other blacktip reef sharks and a variety of other sharks introduced to the tank at the same time are in good health.

Attraction manager Nigel Croasdale said: “We are obviously very shocked and saddened by what has happened.

“This tragic incident was unprecedented in more than 20 years of organising the transport of sea creatures.

“A full investigation is already underway and we are determined to identify the problem, to ensure that this unfortunate event does not happen again.”