SD XC card Not Reading

Recently i had purchased 64gb SdXC v30 card for my New Yi 4k Camera and was used extensively both above and below water for my 6 day trip to andaman islands. Im between i had changed the memory card in camera and kept the new one in my pocket. But back home, when trying to copy down the files, the camera doesnt detect the memory card and says possibly damaged and in my pc , neither it detects or shows even in disk management. Tried many disk repair softwares and the result was the same. On chkdsk, it says that cannot open volume for direct access. The card doesnt shows any cracks or crevices
what can be done, is it physically damaged or water damaged.??