The only place known where Dolphin will drive fish to shore, and then follow them right on the beach is the Lowcountry. The Dolphin pods are residents to the inlets here and are not ocean going. As such they have taught themselves new ways to hunt and pass it on to each new generation.

Above several Dolphin drove Mullet to the beach and went up and caught them on shore. You can see a fish by a Dolphin.
The other trick with these Dolphin pods are their followers, Brown Pelicans. Pelicans will push right in to steal the fish.
Kiawah River, South Carolina.
Wow, quite something to witness and photograph!
I looked at this image again a short while ago. It was shot at around 170mm. 😁. Sometimes they fool me and suddenly drive to shore right where we are standing. Retreat first, photo next 😂😂
Nature never ceases to amaze!
This is watching evolution. Stranding on shore to catch fish is contrary to the way they survive. Yet it works, and they have taught themselves, better yet you can watch them teach their young. So yep, never ceases to amaze.
No doubt, without the adaptability of man & animal to the earth’s harsh environment, nothing would survive. National Geographic’s article, “Lizards Rapidly Evolve After Introduction to Island”, was fascinating about dramatic changes in lizards transplanted on a neighboring island, but not half as fascinating as the dolphins. Anxious to watch the documentary you’ve referred to here. Hopefully, I can find access to it.
This Dolphin is running on this beach ..great image. Anita
Yes, they herd fish up on the beach, then push themselves up there too. Only place this has been documented. National Geographic has made a documentary, Fish and Wildlife many studies.