Speeds vary from slow drifting to fast, powered swimming over 10 kph (15 to 18 miles per hour) in short bursts. Performance speed of aquatic mammals is also dependent and directly related to body shape and swimming mode.
Crocodiles close there valve to stay under water.
they may have gills
Crocodiles mostly stay underwater for shelter if its raining either way crocodiles are fine.
The maximum speed that a vessel will achieve relative to ground is its own maximum speed through water plus the speed of the the moving water downstream.
sharp teeth, their ability to go under water and hunt
Because crocodiles have to have water.
Estuarine Crocodiles and Salt Water Crocodiles!
Alligators and crocodiles have a special flap in their throats that keeps them from swallowing or inhaling water when they take a bite.
Reptiles + Water = Crocodiles
crocodiles rest on sand beds to dry them selves out and bask under the sun, they dont live their whole life in the water like fish.
According to an internet search, crocodiles apparently do not swallow food under water because they would imbibe too much water with the food - and would not necessarily drown. The palatal valve closes off the esophagus and the trachea so water does not flow in. Crocs consume their food at or above the surface of the water.
their are lots of crocodiles endangered their are salt water crocodiles, crocodiles the crocodiles in india,alligaters and also caimans