In the vastness of the earth, there are many breathtaking and strange seas, which attract the attention of countless explorers and scientists with their unique natural landscapes, mysterious ecosystems, or strange geological formations.

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The Red Sea, a sea between Africa and Asia, is known for its vivid red color. The Red Sea gets its name because its waters are rich in salts and red algae, and the sun shines on the surface of the sea that seems to be dyed a magnificent red.

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The Dead Sea is the lowest lake on Earth, with a surface about 430 meters below sea level. The Dead Sea got its name not because it was really "dead", but because its high salinity made it impossible for almost all living things to survive in it. However, the Dead Sea's rich minerals make it a natural remedy for skin ailments, attracting visitors from all over the world to experience its unique feeling of floating.

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The Fluorescent Sea, a natural wonder that can occasionally be seen in many seas around the world. When night falls, the waves crash against the shore, glowing blue or emerald green, as if countless stars are twinkling at the bottom of the sea. This scene is caused by the biofluorescence emitted by the large number of luminescent plankton such as noctilucent insects that accumulate in the seawater when disturbed, bringing a dreamlike visual feast to the viewer.