Photos: Septy Adji, shared to Save The Mahakam Dolphin Facebook Group

Indonesia: 2 Irrawaddy Dolphins die in East Kalimantan
By N. Adri, 14th July 2016;

Conservation activists are calling for a more concerted effort to protect the habitat of Irrawaddy Dolphins (Orcaella brevirostris), or pesut, in Mahakam River in East Kalimantan after two of the protected species were found dead, thought to be as a result of widespread environmental problems.

Save Mahakam Pesut Community activist Innal Rahman said the Mahakam pesut was a protected species as it was critically endangered. The population of Mahakam pesut now numbers only 87 individual animals, down from 96 recorded last year.

The first Dolphin was found dead in Kutai Kartanegara regency on July 3. It was suspected that the female Dolphin died four days before it was found by local residents traveling on the river.

“We saw it stranded near a coal stockpile of coal company PT Morris,” said Rahman, who spotted the Dolphin at the location. At 233 centimeters in length and a body circumference of 128 cm, it is believed the Dolphin was fully mature.

On July 7 a pregnant Dolphin (Actually, it was a Dwarf Sperm Whale) was found dead on nearby Mangempang Beach. Muara Badak resident, Saidah, reported the beached Dolphin to the Navy.

“We later removed it to our post for a further examination,” said the post’s commander Second Lieut. Karel Setiawan. Several old wounds, possibly caused by the propellers of boats using the Pangempang River, one of the Mahakam River’s tributaries, were found on the Dolphin’s body.

There are human settlements, coal stockpiles and oil palm plantations built along the Mahakam River and its tributaries. “Dolphins are a sensitive species. Noise caused by boat engines cause them to lose direction, disrupting their efforts in foraging for food,” said Danielle Kreb, a researcher at the Rare Aquatic Species Indonesia Conservation Foundation in Samarinda.

Source: Jakarta Post

The carcass found on July 7 was actually a Dwarf Sperm Whale (Kogia sima).

Photos of what is likely to be the same Irrawaddy Dolphin (Orcaella brevirostris) carcass reported near Rantau Hempan, East Kalimantan.

Source: Septy Adji, shared to Save The Mahakam Dolphin Facebook Group

Sad news from Mahakam: on 7 July the team from Save The Mahakam Dolphin got info on a code 4 Pesut (Irrawaddy) Dolphin (Orcaella brevirostris) that stranded near Rantau Hempang. The team went to the location at 23:00 and took pictures and measurements of the adult female with total body length 223 cm. No necropsy could be performed and the cause of death remains unclear as no obvious wounds were noticed. The plan is to take more pictures in daylight from different angles. The head appeared blackish and if anyone with vet experience can tell whether this usually occurs pre or post mortem please inform us. Thanks.

Source: Danielle Kreb, shared on Rare Aquatic Species of Indonesia Facebook Group