It is a combined detachment formed from selected personnel of the Navy's frogmen unit (KOPASKA) and the Marine Corps' Amphibious Reconnaissance Battalion (Taifib).

In the initial phase, 70 personnel from the Marine Corps Amphibious Reconnaissance Battalion and Navy frogmen were recruited to form Pasusla.

[2] Upon further development of this unit, on 13 November 1984, the Chief of Staff of the Navy requested the Commander of the Indonesian National Armed Forces, General Leonardus Benjamin Moerdani, to formalize the raising of a naval special forces unit, which was approved and through the issuance of an approval letter (No.

[3] In 1997, after the issuance of Chief of Staff of the Navy decree No: Kep/42/VII/1997 dated 31 July that year, the formation was officially named the Jala Mangkara Detachment.

Denjaka can approach a target by sea, underwater, and vertically from the air as its members are qualified to be deployed as paratroopers.