Mahabharata: Significance of Conchshell names

                                                                  Why do the concshells blown by Lord Krishna, Arjuna and others on the Kuruksetra field have names? What is the significance of those names?
                                                                  At the time it was common practice for the important paraphernalia of warriors to be given names. For instance the bow of Arjuna was known as Gandiva, Krishna's club is known as Kaumodaki etc. They were named in much the same way people were named, to describe some quality, present or desirable, or some pastime related to it.