I find this description a bit odd, since I was under the impression that all of eastern Japan "faces the Pacific." In any event, perhaps Kochi Prefecture is merely proud of the fact that its uninterrupted coastline generates big waves. Waves so big, in fact, that swimming at the beach is off-limits.
There's not much to do at Katsurahama aside from stroll along the waterfront and appreciate the waves. Though, the beach is home to a smallish aquarium and a museum dedicated to Kochi's homegrown government overthrowing hero, Sakamoto Ryoma.
Enjoy the pics below!