Bahía Urbina and Caleta Tagus, Isabela Island. Isabela is the largest island in the Galapagos Islands. Bahía Urbina, where we are in the morning, has the only species of tortoise that survives naturally in the archipelago. Afternoon time in Caleta Tagus, Darwin Lake is a lagoon separated from the bay by a narrow ridge. The lake is in the turquoise color and the branches of Palo Santo trees on the hills like arms embrace the sky. The scenery is very beautiful.

Punta Mangle, Fernandina Island. Punta Mangle is a small bay on Fernandina Island. Here we saw the courtship of the most iconic bird of the Galapagos Islands, the blue-footed booby; and learned about mangrove's unique features that have evolved to adapt to the high salinity of the water.

Punta Moreno, Isabela Island. Punta Moreno's landing site is a vast expanse of rugged volcanic lava fields. The occasional lagoons not only nourish the surrounding plants and shrubs, but also provide a place for birds to relish. Hardly anything can grow in the barren lava fields, but only tough plants like cactus can take root among the volcanic rocks.

Santa Cruz Island. We spent our first day in Galápagos at Santa Cruz Island. We walked among the giant tortoises, learned the fascinating story of the Scalesia tree and start understanding the unique natural history about the archipelago.