That's the tip of the Great Blue Heron's wing jutting into the left side of the picture. He wanted that fish.
This is one of those pixes you always regret not capturing.
The heron is hot pursuit of the osprey. That's the osprey's wing in the upper right.
The osprey lands to eat his fish. The heron approaches.
The heron gives him "The Look" and the osprey flees.
EYE TO EYE
THE ONE THAT DIDN'T GET AWAY
Amazingly, he could still fly with that lump in his throat.