While the study of life below water stretches back to antiquity, our modern scientific understanding largely stems from the 18th century. The items in Case 1 focus on modern expeditions which have contributed to the development of the fields of oceanography and marine biology. These include Captain James Cook's voyages in the Pacific Ocean in the 18th century; Charles Darwin's voyage on the H.M.S. Beagle in the first half of the 19th century; the deep-sea exploration of the H.M.S. Challenger in the late 19th century; and the Great Barrier Reef Expedition in the early 20th century.