This morning, right after breakfast, we did two rounds of zodiac cruises at the island of San Ildefonso. This is a smaller island that sits alone between the towns of Loredo and Mulege, and is a bird sanctuary, and very productive area. Many species of birds use this remote sanctuary for nesting, including the brown and blue-footed booby, frigatebirds, brown pelican and yellow-footed gulls. As we were leaving our anchorage a humpback whale showed up to entertain, as well as a small pod of bottle-nosed dolphins. But, as we cruised farther north that afternoon, we were treated to an encounter with a blue whale, the largest creature that has ever been on our planet!