English: Professional photographer David Adam Kess took this photograph of two sea birds (Whimbrel Numenius phaeopus; Ruddy Turnstone Arenaria interpres) & volcanic rocks on the coastline of Tortuga Bay.

Text from Wikipedia

Tortuga Bay is about a 20-minute walk from the main water taxi dock in Puerto Ayora. The walking path is 1.55 miles (2,490 m) and is open from six in the morning to six in the evening. Visitors must sign in and out at the start of the path with the Galapagos Park Service office. Toruga Bay has a gigantic, perfectly preserved beach that is forbidden to swimmers and is preserved for the wildlife where many iguanas, crabs and birds are seen dotted along the lava rocks. There is a separate cove where you can swim where it is common to view whitetip reef sharks swimming in groups, small fish, birds, and gigantic turtles.

http://en.wikipedia.org/wiki/Volcanic_rock

http://en.wikipedia.org/wiki/Tortuga_Bay