This is the white-bellied sea eagle in the South China Sea near Borneo. When this eagle spreads its wings, the banded sea snake sees the movement and dives. The eagle is a formidable predator, and now it's on the prowl. Sure enough, the eagle power-dives after it. The snake can only stay underwater so long.
It'll have to surface for the briefest moment to get some oxygen. And in that moment......the eagle has harvested the sea snake to provide food for the next generation. Believe it or not, snake-fed baby eaglets are more likely to survive in the wild than chicks raised on other foods.
Like most parents, adult eagles will do whatever it takes to give their kids the edge. If that means learning how to bag sea snakes, so be it. Someday, maybe these chicks will do the same for their babies.
Let's take a look at another capture. As this eagle soars upward with his prize, the snake makes it his business to paralyze the eagle with a deadly dose of snake venom. Let's slow it down. As you can see here, the snake does get a piece of the eagle's leg, but doesn't quite get the chance to inject the venom.
The eagle wins. It takes a magnificent, well-deserved victory lap to the cheers of the throng.