I suspect that this koi might have been saved if the pond had been deeper, but hard to tell by the video. A good short video that reminds us that surprise predators like to eat koi and that when building a pond, it is possible to help reduce this threat. If you are interested in learning more about pond construction and protecting your koi, click on "Courses" on the K.O.I. website to learn from some of the best hobbyists in the koi world.  
 
https://globalnews.ca/video/9393852/eagle-eats-prince-ruper-womans-15-ye...