Freshwater vs. saltwater species #facts #cuteanimals #animals #aquatic #sealife #ocean #waterlife

Freshwater and saltwater species represent two distinct groups of aquatic life adapted to their respective environments. Freshwater species inhabit rivers, lakes, ponds, and streams, where water has low salinity. Saltwater species, on the other hand, thrive in oceans, seas, and saline lagoons, which have significantly higher salt concentrations. The fundamental difference in salinity shapes the physiology, behavior, and ecological roles of the organisms in these habitats.

Freshwater species, such as trout, frogs, and freshwater turtles, have evolved to maintain their internal salt balance in low-salinity water. Their bodies are adapted to prevent excessive water absorption while conserving essential salts. In contrast, saltwater species, like sharks, clownfish, and corals, have mechanisms to expel excess salt and retain water to survive in saline conditions.

The biodiversity of each environment reflects the unique challenges and opportunities presented by salinity levels. While freshwater habitats cover only about 1% of the Earth's surface, they support a diverse range of species. Saltwater environments, accounting for over 70% of the Earth's surface, host the majority of aquatic life. Exploring these species highlights the incredible adaptability of organisms to thrive in diverse aquatic ecosystems.