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@CynthiaMHori: I was using Canon PowerShot G10 with underwater housing
I have updated the information about the photos accordingly.
@Saint Shrike: Thx for your comments. It has been identified by a Cetacean expert as False Killer Whale.
@lori.tas : The name of the island is Sangalaki. It's in East Kalimantan Province, Indonesia.
@Peter. I have added the location. Couldn't do it in the first time because I lost my internet connection while uploading it.