Whether you are a true nature lover or simply enjoy the thrill of an educational field trip, you will find both the wonders of nature and a deep sense of history while visiting Angel Island. In fact, I would suggest making Angel Island a must see destination while visiting San Francisco.
In the great city of San Francisco, which has so much to offer visitors, it's almost impossible to find that one thing that will be truly special and unique about your trip. Angel Island is just that thing. Wherever your interests lie, there is something that will attract the attention of people of all ages, economic situations, and other walks of life. If you can't find something that will interest you here, you really should rethink your interests.
For the nature lovers there is plenty of interest in way of plant life, bird life, and other animal life that should be of interests. There are even specialized tours available that will highlight and focus on the wide variety of life on this great island. Not only are there a great variety of land animals but a good representation of sea animals can be observed here as well. If you love nature, this is a great place to get a good dose of it while in the big city of San Francisco. Not only can you enjoy the sea animals on the ferry ride over (if you choose a ferry for your transportation) but you get to enjoy the plant and animal life on the island as well. Don't forget the air animals either though. There are many varieties of birds that are well represented here as well.
For those that prefer more active pursuits, there is plenty on Angel Island to keep you entertained and happy. First of all, there is plenty to offer by way of hikes. There are even guided hiking tours that offer the safety of numbers (very good for beginning hikers) and information about the island and its rich history. If hiking isn't really your thing, there are also bike rentals available on the island as well. With several trails to choose from with varying degrees of difficulty, even the beginner can enjoy a nice ride around the island.
My personal favorite physical activity here would be the kayak tours. For the right price you can book a guided kayak tour around the island. The tour includes equipment rental, your guide for the day, and a picnic lunch this would be for the all day tour, which will take you around the entire island. There is a 2 and a half hour tour if you aren't too sure about the whole kayaking thing or want to have time to enjoy other aspects of the island on your trip as well. The beauty of a trip to Angel Island is that there really is no right or wrong way to go about enjoying your day.
For sun lovers, there are several beaches where you can bring a blanket and lie down with a good book in order to catch some rays. I do not recommend swimming from Angel Island as the water isn't the cleanest nor is it the calmest. The tides are dangerous and can turn amazingly quickly. But if you love books and find that you could use a ray or two, let the kids and the rest of the family go biking, hiking, touring, and all that other good stuff while you catch up on the latest best seller at the beach.
All of this and I haven't even really hinted at the rich history of Angel Island. There are many activities planned throughout the year that introduce visitors to the rich history of this island. From Civil War Days to the Potomac Tours to the Victorian Christmas there are brief snapshots into the history of this great island. Beyond these events there are tram tours that are offered almost daily during the regular season on the island that provide brief overviews into the islands history. This would be a great way to spend a day while visiting San Francisco.