White bellied sea eagle caught a sea snake

Make no mistake, after missing the juvenile white bellied sea eagle dive shot, I have been tracking this adult. It displayed sign of hunger as it had dived and aborted three times, apparently trying to catch something beneath. Finally it made a final steep dive at very fast speed and guess what, it caught a very long reptile, not sure if it's a sea snake or eel. What do you think?

Image dimensions: 3000 x 2000 pixels