There are a lot of places to swim in Santa Cruz. There are some places where you just really, really should not swim. The Toilet Bowl is one of them.
Next to world-class surf break Steamer Lane, this is a spot where people from all over the world are tempted to jump into a wide round area carved out of the soft rock. But the surf gets trapped in there, and the rocks are slippery. Watch the video and be warned.