This is a Bonus Cache as a reward for completing the associated Taputeranga Marine Reserve Adventure Lab which ends not too far away.
To complete the Adventure lab cache you will need an Apple or Android smartphone with Groundspeak's Adventure Labs app installed. You can find this in your device's app store.
To find the clues to this puzzle cache, you must visit the five waypoints specified in the Taputeranga Marine Reserve Adventure Lab and answer the questions. Each correct answer will yield part of the final co-ordinates for this bonus cache.
The Adventure Lab can be found at https://labs.geocaching.com/goto/TMRWellington.
The cache is located at: S41 20.8AB E174 44.CDE.