Despite extensive planning for the expedition, the filmmakers found themselves at the mercy of El Niño, which drastically changed the very environment they were capturing. The impact was so great that it ultimately necessitated a return visit for six weeks of additional filming in early 1999.

"We tried to incorporate all of the things that enthusiasts of the Galápagos enjoy seeing," explains David Clark. "We see the land iguanas and the frigate birds, as well as the sea lions and giant tortoises. And we're also showing the undersea side, the marine iguanas, as well as the massive schools of fish and the hammerheads and moray eels and delicate sea cucumbers… to really see and experience the Galápagos like never before."