What are the major systems in the ocean?

The major systems in the ocean include the pelagic zone, which encompasses the open ocean and supports diverse marine life; the benthic zone, which consists of the ocean floor and its ecosystems; and the intertidal zone, where land and sea meet, experiencing tidal changes. Additionally, oceanic currents, such as the Gulf Stream, play a critical role in regulating climate and distributing nutrients. Coral reefs and deep-sea hydrothermal vents are vital ecosystems that provide habitat and support biodiversity. Overall, these systems interact to maintain the health and balance of oceanic environments.