Many of the sauropods, notably Brachiosaurus, appear to have them there. This was NOT for use as snorkels, though, because their necks were just too long to pull down air against water pressure. Probably, top-nostrils just didn't get in the way of their constantly eating.
On the front of their face.
no
Dolphins breath air through their noses, just like other mammals. Their noses are called spouts and are located on top of their heads, so they can breath air while keeping virtually all of their bodies in the water.
yes. dinosaurs are reptiles and no reptile can breathe under water.
Eyes, and noses. Or little holes in their heads
In my experience, ripsaw catfish are friendly and enjoy having their noses and heads scratched.
In my experience, ripsaw catfish are friendly and enjoy having their noses and heads scratched.
for communication and mating calls
Frogs have the eyes and noses on the top of their head so they can see their prey and can see while their bodies are submerged under water.
No they do not have noses.
No, starfish do not have noses.
Slugs have 4 noses.