2. INTRODUCTION
Life in water Microscopic, single celled organisms, fishes ,
whales etc
Sea water (Marine environment) Largest aquatic
ecosystems (Sea ocean)
BIOLOGICAL
ENVIRONMENT
Organized relationship between all living organisms
13. BENTHOS
Attached to or on the sea floor
Relatively fewer kinds
Mud –dwellers, characteristic features
quiet,dark,muddy environment with scarcity
of food
Eg. Poriferans , brachiopods, molluscs
(gastropoda) and echinoderms ( sea
cucumber)
14. CORAL REEFS
Habitats of marine organisms
Source of fish and fishery products
Limestones secretions
15.
16. REFERENCES
• Oceanography An introduction to marine
environment – Peter Weyl
• Oceanography – JJ Bhatt
• Fundamentals of oceanography –
Sverdrup,duxbury