Currents are important in marine ecosystems because they redistribute water, heat, nutrients, and oxygen throughout the ocean. Currents also have specific effects on marine life. There are about 20 major ocean currents worldwide. Respond to the following: Name major ocean currents and state the reasons for the formation of ocean currents. Choose one specific current and discuss its major attributes including: Geographical boundaries, Local effects of the current, and any other interesting information you discover in your research. .