* The pelagic zone is the open ocean, away from the coast.
* It is divided into two regions: the epipelagic zone and the mesopelagic zone.
* The epipelagic zone is the sunlit upper layer of the ocean, where most marine life is found.
* The mesopelagic zone is the dimly lit middle layer of the ocean, which is home to a variety of deep-sea creatures.
Benthic Zone
* The benthic zone is the bottom of the ocean, including the continental shelf, slope, and abyssal plain.
* The continental shelf is the gently sloping area that extends from the coast to the edge of the continental slope.
* The continental slope is the steep slope that leads from the continental shelf to the abyssal plain.
* The abyssal plain is the vast, flat area that covers most of the ocean floor.
Coastal Zone
* The coastal zone is the area where the land meets the ocean.
* It includes beaches, dunes, salt marshes, and mangrove swamps.
* The coastal zone is a dynamic environment that is constantly changing due to the effects of waves, tides, and storms.
Coral Reefs
* Coral reefs are underwater ecosystems that are built by colonies of tiny animals called coral polyps.
* Coral reefs are found in warm, shallow waters around the world.
* They provide food and shelter for a wide variety of marine life.
Estuaries
* Estuaries are coastal wetlands that are formed where rivers meet the ocean.
* Estuaries are important habitats for a variety of marine life, including fish, shellfish, and birds.
* They are also important for filtering pollutants from water.