Underwater Image calibration

Hello, I need to find difference between this two image but the problem in the image taken underwater cannot match color together

2

i need to do the difference in above imageS like this example:

Areas of growth should be outlined with a green overlay or a marked with a green
rectangle/circle around the affected area.
 Areas of damage or death should be outlined with a yellow overlay or marked with a yellow
rectangle/circle around the affected area.
 Areas of bleaching/blotching should be outlined with a red overlay or marked with a red
rectangle/circle around the affected area.
 Areas that have recovered from bleaching/blotching should be outlined with a blue overlay or
marked with a blue rectangle/circle around the affected area.

so please ,ANY HELP