I like what you're getting with the camera. This has a lot of potential for studying fins.
That footage is awesome. Make sure you watch it pointing straight down too. You can see a shadow surfer.
Send me your dinged, damaged, and yellowed.
Try to play the youtube video on your smart-phone. It turns out tthat turning around and tilting the phone changes the view direction.
Even better in a VR headset, I just a a crack at that. Unfortunately, my VR headset lacks a focus adjustment mechanism, but I can hold the phone screen manually at the correct distance to get the full-on VR experience with sharp focus.
The VR view helps a lot when trying to figure out what the video actually shows, because the bio-mechanical feedback from turning your head makes the footage 'understandable' to the human stereoscopic vision system.