The platypus uses its nose the same way all mammals do: to determine scents.
If the question actually refers to the platypus's entire snout, or bill, the answer is different.
The platypus uses its bill to find food. It closes its eyes when underwater, and uses its bill to detect movements. Equipped with electroreceptors, the sensitive bill can sense electrical impulses, even the tiniest of movements made by underwater crustaceans.
The bill is also used to shovel up the soil on the bottom of the river or creek in order to find the food. Once found, the platypus uses grinding plates in its bill, rather than teeth, to crush the food before eating it.
It has a bill
no its has a bill
The platypus's mouth is variously referred to as its "bill" or "snout".
The snout of the platypus and the echidna are not similar at all. The platypus has a broad, flat bill which is equipped with sensitive electroreceptors which enable it to detect electrical impulses given out by tiny invertebrates underwater. The echidna has a long, pointed snout which it will push into termite mounds to get to termites, but it has no electroreceptors.
Snout shaped like a duck's bill.
The platypus's snout is called a bill. It is not the same as a "duckbill"; nor is it ever called a "duckbill".
The platypus is classified in the family Ornithorhynchidae because this latin term means "bird-like snout", which refers to the platypus's bill.
The French word for platypus - ornithorynque - is derived from the platypus's scientific name of Ornithorhynchus anatinus, the first word of which means "bird-like snout". This is because the platypus has an unusual snout which, to the average person, may appear to be like a duck's bill, even though it is very different.
The scientific name of the platypus is Ornithorhynchus anatinus. The 'Ornithorhynchus' part means "bird-like snout". This is in reference to the platypus's unusual bill.
This description fits the platypus.
... there is no such creature matching this description ....
That is correct. The platypus's bill is not hard like the beak of a duck or any other bird. It is flexible, and made out of a leathery skin, so it feels soft and leathery to the touch.