For all the Completionists out there, Collectibles are just one of the few ways required to achieve 100% completion of your saved game. These are not components of the main storyline, but collecting them will grant players rewards. Rewards are offered after collecting a certain number of collectibles and individual collectibles also give a small cash reward when collected.
Looking for underwater hidden packages (via Rockstar Games)
There are a variety of collectibles that players can collect and subsequently get rewarded for. The missions vary from Stunt Jumps to collecting hidden packages in the oceans. On this page, you will find the complete list of collectibles that are in GTA 5.
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