1. Geography
1.1. Pacific Ocean
1.1.1. Location
1.1.1.1. Asia and Australia on the west
1.1.1.2. Americas on the east
1.2. Atlantic Ocean
1.2.1. Location
1.2.1.1. Americas on the west
1.2.1.2. Europe and Africa on the east
1.3. Indian Ocean
1.3.1. Location
1.3.1.1. Southern Asia on the north
1.3.1.2. Africa on the west
1.3.1.3. Australia on the east
1.4. Arctic Ocean
1.4.1. Location
1.4.1.1. North Pole region
1.4.1.2. Europe, Asia, and North America
2. Coral Reefs
2.1. Importance
2.1.1. Biodiversity
2.1.2. Protect coastlines
2.2. Threats
2.2.1. Climate change
2.2.2. Human activities
3. Pollution
3.1. Causes
3.1.1. Industrial Waste
3.1.2. Plastic Waste
3.2. Effects
3.2.1. Marine life endangerment
3.2.2. Human health risk
4. Ocean Conservation
4.1. Importance
4.1.1. Conservation of biodiversity
4.1.2. Mitigation of climate change effects
4.2. Methods
4.2.1. Protected areas
4.2.2. Pollution control
5. Marine Life
5.1. Fish
5.1.1. Sharks
5.1.1.1. Habitat
5.1.1.2. Diet
5.1.1.3. Species
5.1.1.3.1. Great White Shark
5.1.1.3.2. Hammerhead Shark
5.1.2. Whales
5.1.2.1. Habitat
5.1.2.2. Diet
5.1.2.3. Species
5.1.2.3.1. Blue Whale
5.1.2.3.2. Humpback Whale
5.2. Deep-Sea Creatures
5.2.1. Giant Squid
5.2.2. Anglerfish
6. Ocean Currents
6.1. Types
6.1.1. Surface Currents
6.1.2. Deep Sea Currents
6.1.3. Upwelling and Downwelling
6.2. Effects
6.2.1. Climate Regulation
6.2.2. Marine Transportation
7. Exploration and Resources
7.1. Ocean Exploration
7.1.1. Techniques
7.1.2. Discoveries
7.2. Resources
7.2.1. Minerals and Energy
7.2.2. Seafood