Contents: 1. Marine Environment and their Divisions. 2. Life in Oceans: Major Group of Phytoplankton. 3. Life in Oceans: Major Group of Zooplankton. 4. Seaweeds. 5. Seagrasses. 6. Environmental Factors Affecting Life in the Ocean. 7. Vertical Migration of Zooplankton. 8. Phytoplankton and Zooplankton Relationship. 9. Primary Productivity. 10. Seasonal and Geographical Variations in Productivity. 11. Plankton and Fisheries. 12. Intertidal Ecology: Rocky Shore. 13. Sandy Shore. 14. Muddy Shore. 15. Mud Banks. 16. Coral Reef Ecosystem. 17. Mangroves. 18. Salt Marshes. 19. Estuarine Ecosystem. 20. Nekton. 21. Boring and Fouling Organisms. 22. Bioluminescence Organisms. 23. Harmful Algal Blooms (HABs). 24. Benthos. 25. Deep - Sea Biology.
