Since Update 3.4.0, destroying an Enemy Robo Shark in outer space almost always yields a gem, and even destroying bi-planes can, in rare occasions, yield multiple gems.As the Big Daddy And Above have the broadest diets in Hungry Shark Evolution, they are the best choice for earning gems since they are able to eat all varieties of potential gem-yielding creatures with ease.During a Gold Rush, Paragliders, Harpoon Men, Tropical Birds and Fishing Boats, (which do not turn golden), have a 100% chance of yielding gems.Purchasing maps, save for the Basic Map.Reviving your shark (1 gem is used, then it doubles each time, and then they are disabled to use).The following notification will offer 3 gems, and the next will offer 5. Initially, the first notification will not reward any gems. By signing into the game as soon as you receive the notification, you will receive the said number of gems.
When Hungry Shark Evolution is left idle for a few days in a row (meaning that you do not play the game for several days), a notification from the game will appear (Your shark is hungry! Come back and feed him and claim x gems reward!). Characterized as an animalistic subspecies of Cybertronian, rather than the off-world enforcers of the Quintessons, the Sharkticons of this universe also have.Occasionally, a sunken treasure may yield a gem. Giant crabs will drop from 0-5 gems, depending on which crab you are eating.
This method is somewhat expensive but is the fastest and easiest method of earning gems. The fastest way to earn gems is to purchase them with real money. "Liking" the Hungry Shark Evolution Facebook page rewards you with five gems.