Operation Platypus was an operation by Allied special reconnaissance personnel from Z Special Unit ("Z Force") during the Borneo Campaign of World War Two. Platypus involved small groups being inserted into the Balikpapan area of Dutch Borneo (Kalimantan), to gather information and organise local people as resistance fighters against the Japanese. On the night of 22 March, the main body of Platypus 1, using folboats fitted with outboard motors, managed to land, despite the motors failing. At one stage they were surrounded by Japanese patrols, but managed to evade them.