Basic looting - what all raiders of lost islands learn even since they start walking on two feet.
Collecting treasures is the main goal of the game. Get more than your team mates and you win at the end. Only you!
Keep in mind the scores:
- silver $1
- gold $3
- gems $5
- diamonds $10
Watch the others closely as they always lie about what's in their pockets. Unless they drown (with or without help) and drop them all down. That is when you need to be close to step in, to casually collect.
Finders keepers, right?