David goes voyaging

A young narrator joins a scientific yacht cruise through tropical waters, recounting island landings, encounters with seabirds and marine life, dives and dredging operations, a volcano visit, shipboard routines, and a rescued castaway. Chapters move from canal transit through stops including the Galápagos and Cocos Islands, blending observational natural history, adventurous episodes, and illustrated records of specimens and scenes. The tone mixes wonder at wildlife and hands-on descriptions of exploration techniques, offering a chronological travel memoir of weeks at sea and island excursions.