You can collect sea monsters by hatching eggs and completing quests. Eggs can be found during gameplay or purchased, and quests often reward you with unique monsters.

To grow your city, focus on building and upgrading habitats, collecting resources, and strategically placing decorations. This will increase your city's population and overall happiness.

Breeding requires two monsters. Select a breeding structure, choose two monsters, and wait for the eggs to hatch. Experiment with different combinations to discover new species.

To level up your sea monsters, follow these steps: 1. Feed them food to increase their experience. 2. Evolve them using specific items when they reach a certain level. 3. Participate in battles to earn more experience.

Enhancing your monsters' abilities involves training and using items. Train them by participating in battles to gain experience. Use special items to boost their stats before major battles for better performance.