Poor quality, but I found a trick trying to post this. It was taken on a phone and uploaded to Facebook, and Facebook won't allow you to export videos. So to hack this simply open the video in a new Facebook page and copy that URL. Paste it into a new window and change "www" to "m". This opens the video in their mobile site. Hit play and as the video is playing right click and save. It will download as an mp4 which can then be uploaded to Youtube. The quality isn't great because it's still in the camera's format.
I've hatched thousands of skate eggs (mermaid's purses) and this is only the second set of twins I've ever seen. As they grow the case won't have enough room and they will both die, so my plan is to cut them out of the case in a few months and grow them in a bowl of filtered seawater.