A carcass of a black dolphin washed ashore at Tanjung Bunga beachfront in this May 7, 2016 file pic. Two dolphins were found dead in less than a week recently.

GEORGE TOWN: Two dolphins have been found dead at the Tanjung Bungah beachfront in less than a week.

The first death was reported on Dec 29 while another death was reported today.

The double deaths have raised concern among environmentalists, who have called for a thorough probe into the incident.

Sahabat Alam Malaysia said the deaths of the mammals should be investigated.

The non-governmental organisation said that the earlier death was reported to the Fisheries Department but the department did not take any follow-up action.

"They just buried it instead of conducting an autopsy.

“We would not know the cause of death unless the department or the Fisheries Research Institute of Malaysia carries out a post-mortem," said a SAM representative.

The death of the mammals was first posted in the Pulau Parasit Facebook page.

According to the page, the dead dolphins were of the Indo-Pacific Humpback species.

Dolphins are a rare sight in Penang waters, but have been spotted around the island in recent weeks.

A local claimed to have seen several dolphins in the waters off Teluk Bahang on Christmas Eve, while another allegedly spotted a couple of dolphins near the Penang Bridge last Saturday.

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