The crocodile is following the current towards his prey. Being blocked by a tree I could not capture the conclusion, but I can explain the outcome. The croc drifted into the wildebeest on the left, opened his mouth very wide and tried to clamp onto his face. He could not get a grip and the swift current pulled the croc downstream before he could launch a second strike. Typically they attack below the head where they can grab flesh or legs and drag the animal under, but not this day.