| Aspect | Freshwater Biology | Marine Biology |
| Definition | Study of organisms and ecosystems in freshwater environments. | Study of organisms and ecosystems in marine environments. |
| Examples | · Lakes · Rivers · Ponds · Streams · Wetlands | · Oceans · Seas · Estuaries · Coral reefs · Coastal zones |
| Salinity | Lower salinity levels as compared to marine environments. | Higher salinity levels in seawater. |
| Biotic Diversity | Unique freshwater species adapted to specific conditions. | Diverse marine life with a wide range of species adapted to various oceanic conditions. |
| Temperature Variability | More variable temperatures | More stable temperatures |
| Challenges | · Pollution · Habitat destruction · Altered water flow | · Overfishing · Climate change |
| Study Topics | · Limnology (study of inland waters) · Aquatic botany · Freshwater microbiology · Conservation of freshwater ecosystems | · Marine ecology · Fisheries biology · Coral reef ecology · Deep-sea biology |
Comparison between Freshwater Biologyand Marine Biology
Let me share with you a comparison between Freshwater Biology and Marine Biology.