Gopro hero 3 water damaged in salt water? help?

Gopro hero 3 water damaged in salt water? help?

It may be too late but last afternoon the case cracked and some water got in, I noticed some salt forming from the water evaporating and also noticed it was getting pretty hot. I took out the battery and SD card but the SD card is broken. Now it will not turn on or charge. Again it might be too late but any ideas?