The 20-kilogram, 1.1-metre-long female Finless porpoise was death of an endangered marine mammal this year following the death of an Irrawaddy dolphin.

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It was initially suspected to have been the victim of decompression illness as the area experienced heavy rain with large amounts of freshwater draining into sea and strong wind and waves.&nbsp;

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The carcass also showed traces of being cut by a net. 
It was sent for an autopsy to determine the cause of death at the Gulf of Thailand&#39;s Marine and Coastal Resource Research and Development in Chumphon.

Finless porpoise’s carcass washes ashore in Surat Thani

A Finless porpoise’s carcass washed ashore in Laem Sai Beach in Surat Thani's Chaiya district on Sunday morning, Governor Wichawuth Jinto said as he led a team to inspect the animal.