A Corpus Christi man was fishing in the Oso Bay reeled in a surprising catch just after 8 a.m. Friday; a very large bone.Unsure of what he caught, the fisherman alerted police, and the Nueces County Medical Examiner was called out to investigate. It is still not clear whether the bone was human or not."Especially during hunting season," said Lt. Hooper of the Corpus Christi Police Department. "Very rarely are we able to make a determination at the scene whether it is human or animal."The bone has been shipped off to a laboratory to make that determination.