Treasure Hunter

Head over to the Treasure Hunter job marker.

Walk up to the circle at the door, then press E to start the job.

From here you can recruit other players next to you and change your clothes to work clothes (or change back to civilian clothes). Once you are ready and have changed into the scuba gear, click Start Job in the bottom right.

You can have up to 4 people doing the job at once. All workers receive the same amount of money regardless of the party amount.

Once you start the job, you will spawn inside a boat. Open your map and look for the Treasure Location blip, then drive your boat over to it. Sometimes they will be really close, sometimes they will be far away - it spawns them for you at random.

Once you have reached your destination, exit the driver's seat and then press E to drop the anchor.

Jump off the boat into the water then use your space bar to dive under. Search for the treasure crate within the purple circle you stopped inside of. Once you get closer, you will hear a beeping noise that will increase in speed the closer you get. Once close enough, the crate will have a large red arrow above it.

Swim right up to the crate and press E to collect the treasure.

Swim back up to your boat and hop in, press E to lift the anchor then hop in the driver's seat. Open your map and look for the next location - like at the start, it could be really close or really far away, they will be given to you at random.

Keep collecting treasure until your heart's content. Once you are ready, head back to the Treasure Hunter job marker.

There will be a big red circle for you to drive the boat into. Once you hit the circle, press E to end working. Don't forget to take off your scuba gear before leaving.