Balboa Island Ferry

Around since the dawn of time, the Balboa Island Ferry runs three boats continuously between the peninsula and the island. Each (identical) boat is able to hold three average-sized cars and roughly 20 passengers. The price is very inexpensive and it's an oddly fun experience to be sitting in your car as it crosses the channel.

The landings can be seen in the upper-right and bottom-left of the selection square. There is a boat docked at the island (top-right). You can also see the two other ferries near the middle of the selection box.