A group of four of us got a campsite and stayed on the island over-night. The boat ride in was phenomenal, make sure to get your tickets early and follow their strict guidelines (water and gas to be boarded separately). The boat ride takes an hour with tons of scenery. The island is like something prehistoric. You dock in a cove teeming with life. You'll have to walk up about five or six flights of steep stairs, overall it's a half mile to the campsites so you can bring a small cooler. There is no fresh water on the island, so expect to carry. We had about six gallons total for an overnight so that we had plenty to cook and clean with. There were, and this is no exagerrtion, seagulls everywhere. As well as their baby chicks. They were highly aggressive, swooping in and dive bombing you. You also had to keep eyes on the trail for sleeping chicks. But mostly, they're a nuisance but not violent (kind of like what I'm sure they thought of us). The campsites are incredibly small, with the exception of two. 6 and 7 can barely fit four people, so I recommend getting your own per couple, and they are first come first serve. A downside is the campsites being so close, a party of around twelve were able to, essentially, glamp as they could bring all of their "equipment" with them. They somewhat ruined the isolationist feeling by staying up til midnight, drinking, and playing music from a speaker. I recommend ear plugs to sleep with due to the gulls, who will stay loud through the night. But the views are absolutely stunning. It is a wild and savage experience that feels like you're part of a documentary crew for Planet Earth, or something. Once the boat leaves, taking the day hikers with it, you are essentially alone. You can swim, although the water is brisk and frigid, but the snorkeling is intensely raw and amazing. The only place, the cove from which you docked, has a kelp forest teeming with life. Just be on the lookout, there were all types of fish, but as we were leaving a sting ray swooped into the cove. Just be aware. There are sharks around the island, but they're not known to venture inside, however you will see your share of sea lions. This was one of our favorite parts of the trek. You can bring kayaks, something which I wish we would have done, as there are even better places to observe sea life on the southern tip. The boat comes back the next day around 11 am, and doesn't leave (with you) until 3:45, so bring enough food for two days. I do not recommend doing this trip for more than one day, unless you have some extensive sea-activities planned. Overall, a wild experience that was very immersive that I will not soon forget.