Starting on Monday Australia and South Korea will hold joint naval drills.
This is the first time that the two countries have held joint drills.
The two day drills will take place north east of Jeju Island.
Government officials have stated that the focus of the drills of will be detecting and tracking enemy submarines and torpedoes.
Officials continued to say that they made the decision to hold the drills due to concern that North Korea is planning a nuclear test.