What is the Difference Between Saltwater and Freshwater Crocodiles?

The main differences between saltwater and freshwater crocodiles can be summarized as follows:

1. Size: Saltwater crocodiles, also known as "salties," are much larger than freshwater crocodiles. Males can grow up to six meters in length and weigh over 1000 kg, while freshwater crocodiles are smaller, with males reaching up to three meters and a maximum weight of 90 kg.
2. Snout Shape: Saltwater crocodiles have a broader snout, while freshwater crocodiles have a narrower, longer snout.
3. Scutes: Freshwater crocodiles have a single row of four large scutes (bony plates) right behind their head, while saltwater crocodiles do not have these scutes.
4. Diet: Saltwater crocodiles mostly feed on fish but may also take turtles, birds, and large land animals such as wallabies, dogs, pigs, horses, cows, and buffalo. Freshwater crocodiles eat fish and small animals such as frogs, lizards, snakes, rats, bats, birds, and insects.
5. Habitat: Saltwater crocodiles inhabit brackish or saltwater marshes, lagoons, and river mouths, while freshwater crocodiles are found in freshwater rivers, pools, and lakes.

Despite these differences, both species share some common characteristics:

• They are both large, cold-blooded, carnivorous reptiles native to Australia.
• Both species have thick and leathery skin containing plate-shaped bony scales.
• They have narrow, V-shaped snouts and conical teeth located outside of the jaw.
• Both saltwater and freshwater crocodiles exhibit indeterminate growth, meaning they continue to grow throughout their lives.

Comparative Table: Saltwater vs Freshwater Crocodiles

Here is a table comparing the differences between saltwater and freshwater crocodiles:

Saltwater crocodiles are larger and more heavily built than freshwater crocodiles, with a more robust skull and teeth to deal with their prey. They inhabit coastal habitats in Northern Australia, Australasian islands, Eastern India, and Sri Lanka, while freshwater crocodiles are native to Australia and restricted to inland wetlands. Saltwater crocodiles are also more aggressive than freshwater crocodiles.