Oceanic regions refer to the vast areas of the Earth's oceans, which cover about 71% of the planet's surface. These regions are divided into five main oceans: the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean. Each ocean has unique characteristics, including varying temperatures, salinity levels, and marine life. Within these oceans, there are different zones, such as the intertidal zone, neritic zone, and oceanic zone. These zones support diverse ecosystems, from coral reefs to deep-sea habitats, and are crucial for global climate regulation and biodiversity.