Green tide of algae invades Mahia beach

The once pristine Mahia beach, in northern Hawke's Bay, has been invaded by a tide of fluffy green algae which is driving the locals nuts.

They fear the mysterious visitor will deter holidaymakers from the popular resort this Easter.

The algae is described as similar to green cotton wool and sticking to everything, and has caused problems with the water intakes of outboard motors.

"The algae has created havoc for people trying to launch their boats and has prevented tourists from walking on the beach," said local beachcomber Bill Shortt.

However, Hawke's Bay Regional Council is not overly concerned about the sea of green.

Coastal marine scientist Anna Madarasz-Smith said she assumed it was non-toxic, being macro (large) algae as opposed to a microscopic one.

"It is not uncommon for algae to accumulate in certain areas from time to time, particularly after heavy seas," she told the Gisborne Herald.

A sample has been sent to the Cawthron Institute for analysis, with results due next week.

Ms Madarasz-Smith said if the algae was not hazardous, the regional council was not responsible for removing it.

- NZPA