As I said at the time, it was one of the most amazing things I'd ever seen - so many animals all working in concert. It was one of those things that make you realise that we humans aren't the only intelligent animal on this planet. Superpods are rare, only taking place when the right food source is in the right place. But when they happen they bring in dolphins from all around the area - tens and hundreds of miles.
I was noodling around the BBC news site today when I found a video taken in the middle of one of these superpods - just off the Welsh coast: