They swallow stones that aid digestion and help them swim, since they naturally float.
Crocodile's swallow stones so they can dive deeper. They can hold there breath for up to 1 hour depending on how old they are.
yes, they do but they are fixed. So, no - they can't poke their tongues out but they can swallow. They allow little birds to sit in their mouths to pick their teeth as they can't manoeuvre their tongue around.
Removing the air from your lungs makes you less bouyant and allows you to sink faster. I never exhale when doing a surface dive so I can swim down deeper, if you do the surface dive properly by throwing your legs high out of the water you will sink fast enough.
No they don't. With small animals such as rats, and small birds, they chew. With larger animals such as wildebeest, deer, and maybe even humans if they're that hungry, they do the death roll. What that is the Alligator or Crocodile will bite it's victim, then it will roll until the limb of the animal is completely ripped off so the Alligator or Croc can chew it.
Antarctica is a polar continent and crocodiles are tropical aquatic reptiles, so no, crocodiles do not 'live in Antarctica'.
Crocodiles have an internal bony skeleton and a spine, so are vertebrates.
If the depth of the water is 8 feet or deeper and the diving board is no more than a foot or so off the water. You can bing/google the exact safety measures when it comes to diving into water.
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.
Dive is not an HM/TM anymore so it can't learn dive, but you can get it from a different region so if you trade a Pokemon holding that move then take it off them it can learn dive.
If you are talking about Ocarina of time, play and win the diving game to get the silver scale so that you can dive deeper. Dive into a door under water which will put you at the lake. Dive around that door and the pillars to find a bottle with a message in it. Give the message to king zora and he will move over. Go in the path that in there. P.S. you will need a fish which you can find in he zora domain in shallow water.
No
they can rub their nipples