Trans-Tasman is an adjective used primarily to signify the relationship between Australia and New Zealand. The term refers to the Tasman Sea, which lies between the two countries. For example, trans-Tasman commerce refers to commerce between these two countries. * A trans-Tasman flight is a flight between Australia and New Zealand. * The Trans-Tasman Travel Arrangement is an agreement between Australia and New Zealand allowing their citizens free movement between the two countries. * The Trans-Tasman Trophy is a Test cricket trophy.