I've recently gotten into SCUBA diving, and am curious about shooting with available light underwater.
I've heard that when taking underwater photos with available light, an appropriate blue or green water filter should be used. I understand why they're necessary (to correct for lost red or violet/magenta light at depth). However, are comparable results achievable without filters by post-processing the RAW files after the fact (adjusting white-balance and hues)? Or will the results never be quite as good as with the appropriate filter?
Are there an A-B example photos out there? Same subject: processed RAW with filter vs. processed RAW without filter?