lagoon (noun)

1. In the cartoon, the characters explore a hidden lagoon filled with colorful fish and coral reefs.

2. The protagonist stumbled upon a secret lagoon, where they found solace and peace in the tranquil waters.

3. The anime series showcased a breathtaking lagoon as the main setting for the climactic final battle.

4. The couple enjoyed a romantic picnic by the lagoon, watching the sunset reflect on the calm waters.