There have been numerous experiments in speciation.
Speciation doesn't occur in a lab under a protocol, it occurs in nature. If someone happens to catch it, hopefully they write it down for the rest of us.
You make it sound like someone's making mice out of shrews in the lab. It confuses the creationists since they already think that's what evolution is.
Weren't there several experiments in speciation? I recall the fruit fly literature.