There are 15 sunken items hidden around the main level. Collect them for extra coins! The more you find, the bigger the reward.

You can purchase the treasure map in the shop to help you find the sunken items, but some are scattered in locations that may be difficult to reach when you have a low-level shark. Discovering and gathering all 15 sunken items is one of the first and best missions to accomplish in the game. It can be very useful when you want to accumulate points and beat high scores if gathered during gold rush!